SlideShare uma empresa Scribd logo
1 de 30
Eye Eye Eye !
• By the end of the dissection students will be
able to identify various parts of the eye.
EYE
The eye is an
extension of
the brain
It helps us take
in light
information
from our
surroundings.
This is how!
Eye brain
proximity
• Can you see :
• the optic
nerve bundle?
• Spinal cord?
What are the parts of the eye?
• Let’s use a diagram to help us get familiar with
the parts and pronounce them correctly!
Cornea
Cornea- transparent membrane that covers iris and
pupil. Focuses light on the retina.
Pupil, Iris, Sclera
Pupil- hole passes different amounts of light
Iris- colored part of the eye that controls the size of
the pupil
Sclera- “whites” of the eye that forms outer covering
Aqueous Humor, Ciliary Muscle, Lens
Aqueous Humor- nutritious fluid between the iris and
the cornea. As we age, it breaks down and we begin
to see “floaters”
Ciliary Muscles- produces aqueous humor and
controls lens shape
Lens- Bends light rays to the back of the eye –retina.
Elastic so change in shape allows for focus on
objects close up or far away
Retina
• Full of light
receptors
which are
sensitive
to:
• Cones-
Colour
• Rods- Light
levels
• Massive
blood
supply is
also
needed
Blind Spot- site of
optic nerve
connection
Vitreous Humor, Blind Spot, Optic Nerve,
Vitreous Humor- transparent jelly-like fluid that fills
the eye and refracts light
Blind Spot- area where optic
nerve attaches. No retina is
located there so information
cannot be picked up; “Blind”
Optic Nerve- sends messages
picked up by retina to the brain
Choroid Layer, Tapetum lucidum
Choroid Layer- lies between the
sclera and the retina it provides
the blood supply to the eye.
Tapetum lucidum- iridescent film
under the retina that provides
animals with “night vision”
Eye Dissection
• Before we go over the dissection, let’s review
the parts of the eye and their function
Cross
section
You must know:
1. Lens
2. Cornea
3. Aqueous humor
4. Pupil
5. Iris
6. Ciliary Muscle
7. Sclera
8. Vitreous Humor
9. Retina
10. Blind Spot
11. Choroid Layer
12. Optic Nerve
13. Tapetum Lucidum
Sclera
Blind
Spot
Ciliary
Choroid Layer
Taptem lucidum
Cut away fat using scissors
Anterior External Eye Structure
Posterior External Eye Structures
Sheep eye dissection
• Select a place to make an incision of the sclera midway
between the cornea and optic nerve. Use the point of a
surgical scissors to make a small cut through the sclera.
Fluid should ooze out of the eyeball when you have cut
deeply enough.
Sheep eye dissection
• Arrange the two hemispheres of the eye as you see in the
photograph.
• Observe the semi-fluid vitreous humor that fills the central
cavity of the eye. It is transparent in the living eye but might
be cloudy in the preserved specimen
• The retina lines the the posterior cavity of the eye and
extends forward to the ciliary body. Use your probe to lift
and pull the retina back from the underlying choroid layer.
• Notice that the retina is only firmly attached to the choroid at
one place. This region is the optic disc or blind spot.
Internal Eye Structure – Posterior Section
Sheep eye dissection
Internal Eye Structures – Anterior Section
Remove the lens and place against
newspaper to see that it is a
magnifier!
• When the lens is removed, an opening, allowing light to enter
the eye is seen. This opening, the pupil is located in the
center of the iris. Note the oblong shape of the sheep pupil,
in humans the pupil is circular.
• The back side of the iris can be seen just above the pointer in
the photograph.
Sheep eye dissection
Can you identify the parts? You will
need to to get credit during the lab
1. Cornea 4. Iris 7. Ciliary Body 10. Retina
2. Sclera 5. Pupil 8. Choroid 11. Lens
3. Optic Nerve 6. Ora Serrata 9. Tapetum Lucidum 12. Vitreous Humor
1. Cornea
2. Sclera
3. Optic Nerve
4. Iris
5. Pupil
6. Ora Serrata (you do not
have to know this
structure!)
7. Ciliary Body
8. Choroid
9. Tapetum Lucidum
10. Retina
11. Lens
12. Vitreous Humor
Clean up!
• Follow clean up procedures:
– Place all remains in a zip lock bag and place it in your
box.
– All dissecting instruments, tray and gel must be
thoroughly washed in water.
– Remove the paper towel from the tray and dispose of
it in the trash bag.
– All used gloves are to be disposed of in the trash bag.
– All goggles returned to the designated place.
– Lab stations are clean and free of water/waste.
– Each person washes their hands with soap and water.

Mais conteúdo relacionado

Mais procurados

Mais procurados (20)

The Human Eye
The Human EyeThe Human Eye
The Human Eye
 
Eye
EyeEye
Eye
 
Sheep eye dissection 2019
Sheep eye dissection 2019Sheep eye dissection 2019
Sheep eye dissection 2019
 
Chapter 14 The Human Eye Lesson 3 - The 2 Mechanisms of the Eye 1) Accommodat...
Chapter 14 The Human Eye Lesson 3 - The 2 Mechanisms of the Eye 1) Accommodat...Chapter 14 The Human Eye Lesson 3 - The 2 Mechanisms of the Eye 1) Accommodat...
Chapter 14 The Human Eye Lesson 3 - The 2 Mechanisms of the Eye 1) Accommodat...
 
Human eye
Human eyeHuman eye
Human eye
 
Histology of nerve system
Histology of nerve systemHistology of nerve system
Histology of nerve system
 
PHOTOCHEMISTRY OF VISION
PHOTOCHEMISTRY OF VISIONPHOTOCHEMISTRY OF VISION
PHOTOCHEMISTRY OF VISION
 
Rhodopsin cycle
Rhodopsin cycle Rhodopsin cycle
Rhodopsin cycle
 
structure of neuron
structure of neuronstructure of neuron
structure of neuron
 
Cells ppt.presentation
Cells ppt.presentationCells ppt.presentation
Cells ppt.presentation
 
Human eye
Human eyeHuman eye
Human eye
 
PHYSIOLOGY OF VISION
PHYSIOLOGY OF VISIONPHYSIOLOGY OF VISION
PHYSIOLOGY OF VISION
 
Anatomy of the eye
Anatomy of the eyeAnatomy of the eye
Anatomy of the eye
 
Eye vision
Eye visionEye vision
Eye vision
 
What Is A Neuron
What Is A NeuronWhat Is A Neuron
What Is A Neuron
 
Neuron structure
Neuron structureNeuron structure
Neuron structure
 
Human eye
Human eyeHuman eye
Human eye
 
Nerve tissues (mic ana lec)
Nerve tissues (mic ana lec)Nerve tissues (mic ana lec)
Nerve tissues (mic ana lec)
 
Anatomy of cornea and sclera
Anatomy of cornea and scleraAnatomy of cornea and sclera
Anatomy of cornea and sclera
 
Eye and orbit revision ppt
Eye and orbit revision pptEye and orbit revision ppt
Eye and orbit revision ppt
 

Destaque

Destaque (20)

Sheep eye dissection
Sheep eye dissectionSheep eye dissection
Sheep eye dissection
 
Lab 15 Sheepeyediss
Lab 15 SheepeyedissLab 15 Sheepeyediss
Lab 15 Sheepeyediss
 
Sheep Eye Dissection
Sheep Eye DissectionSheep Eye Dissection
Sheep Eye Dissection
 
Sheep+brain+dissection
Sheep+brain+dissectionSheep+brain+dissection
Sheep+brain+dissection
 
Anatomy of eye
Anatomy of eyeAnatomy of eye
Anatomy of eye
 
Dissecting A Sheep Eye
Dissecting A Sheep EyeDissecting A Sheep Eye
Dissecting A Sheep Eye
 
Trid current vs future state
Trid current vs future stateTrid current vs future state
Trid current vs future state
 
The Eye 2014
The Eye 2014The Eye 2014
The Eye 2014
 
Parts of the eye work sheet 97
Parts of the eye work sheet 97Parts of the eye work sheet 97
Parts of the eye work sheet 97
 
A Fetal Pig Dissection
A Fetal Pig DissectionA Fetal Pig Dissection
A Fetal Pig Dissection
 
ANS (SYMPATHETIC and PARASYMPATHETIC)
ANS (SYMPATHETIC and PARASYMPATHETIC)ANS (SYMPATHETIC and PARASYMPATHETIC)
ANS (SYMPATHETIC and PARASYMPATHETIC)
 
çOcuklarda kan gazları(fazlası için www.tipfakultesi.org)
çOcuklarda kan gazları(fazlası için www.tipfakultesi.org)çOcuklarda kan gazları(fazlası için www.tipfakultesi.org)
çOcuklarda kan gazları(fazlası için www.tipfakultesi.org)
 
Brain dissection pictures
Brain dissection picturesBrain dissection pictures
Brain dissection pictures
 
Hücre zarında transport
Hücre zarında transportHücre zarında transport
Hücre zarında transport
 
Energy transformation
Energy transformationEnergy transformation
Energy transformation
 
greeks and etruscans art
greeks and etruscans artgreeks and etruscans art
greeks and etruscans art
 
Anatomy of ear
Anatomy of earAnatomy of ear
Anatomy of ear
 
Energy Transformation
Energy TransformationEnergy Transformation
Energy Transformation
 
Chapter 13 Endocrine System
Chapter 13   Endocrine SystemChapter 13   Endocrine System
Chapter 13 Endocrine System
 
contact lenses fitting for KCN
contact lenses fitting for KCNcontact lenses fitting for KCN
contact lenses fitting for KCN
 

Semelhante a Sheep eye dissection

Semelhante a Sheep eye dissection (20)

The Human Eye
The Human EyeThe Human Eye
The Human Eye
 
Comparative study of vertebrates
Comparative  study of vertebratesComparative  study of vertebrates
Comparative study of vertebrates
 
The human eye 10 13-2011
The human eye 10 13-2011The human eye 10 13-2011
The human eye 10 13-2011
 
Presentation on eye
Presentation on eyePresentation on eye
Presentation on eye
 
eye ppt.pptx
eye ppt.pptxeye ppt.pptx
eye ppt.pptx
 
The Eye.pdf
The Eye.pdfThe Eye.pdf
The Eye.pdf
 
The human eye. group 1
The human eye. group 1The human eye. group 1
The human eye. group 1
 
Special senses structure of eye
Special senses  structure of eyeSpecial senses  structure of eye
Special senses structure of eye
 
EYE IMAGE.docx
EYE IMAGE.docxEYE IMAGE.docx
EYE IMAGE.docx
 
EYE IMAGE.pdf
EYE IMAGE.pdfEYE IMAGE.pdf
EYE IMAGE.pdf
 
EYE IMAGE.docx
EYE IMAGE.docxEYE IMAGE.docx
EYE IMAGE.docx
 
The eye (sense of sight organ)
The eye (sense of sight organ)The eye (sense of sight organ)
The eye (sense of sight organ)
 
HUMAN EYE AND COLOURFUL WORLD.pdf
HUMAN EYE AND COLOURFUL WORLD.pdfHUMAN EYE AND COLOURFUL WORLD.pdf
HUMAN EYE AND COLOURFUL WORLD.pdf
 
The Optics of Human Eye & Gallstrand schematic eye
The Optics of Human Eye & Gallstrand schematic eyeThe Optics of Human Eye & Gallstrand schematic eye
The Optics of Human Eye & Gallstrand schematic eye
 
Visual acuity, lens and fundus oculi
Visual acuity, lens and fundus oculiVisual acuity, lens and fundus oculi
Visual acuity, lens and fundus oculi
 
Mammalian eye
Mammalian eyeMammalian eye
Mammalian eye
 
The Human Eye PowerPoint.pptx
The Human Eye PowerPoint.pptxThe Human Eye PowerPoint.pptx
The Human Eye PowerPoint.pptx
 
Human eye
Human eye Human eye
Human eye
 
The Human Eye PowerPoint.pptx
The Human Eye PowerPoint.pptxThe Human Eye PowerPoint.pptx
The Human Eye PowerPoint.pptx
 
EYE ANATOMY AND PHYSIOLOGY ppt.pptx
EYE  ANATOMY AND PHYSIOLOGY ppt.pptxEYE  ANATOMY AND PHYSIOLOGY ppt.pptx
EYE ANATOMY AND PHYSIOLOGY ppt.pptx
 

Mais de thuphan95

The rise of_islam
The rise of_islamThe rise of_islam
The rise of_islamthuphan95
 
American Revolution
American RevolutionAmerican Revolution
American Revolutionthuphan95
 
The Critical Period 1781-1789
The Critical Period 1781-1789The Critical Period 1781-1789
The Critical Period 1781-1789thuphan95
 
Nationalism and economic development
Nationalism and economic developmentNationalism and economic development
Nationalism and economic developmentthuphan95
 
Sectionalism
SectionalismSectionalism
Sectionalismthuphan95
 
Political Development and Social Change
Political Development and Social Change Political Development and Social Change
Political Development and Social Change thuphan95
 
Vector borne disease and Dengue
Vector borne disease and Dengue Vector borne disease and Dengue
Vector borne disease and Dengue thuphan95
 
Vector Borne Diseases
Vector Borne DiseasesVector Borne Diseases
Vector Borne Diseasesthuphan95
 
Host pathogen interactions
Host pathogen interactionsHost pathogen interactions
Host pathogen interactionsthuphan95
 
Meningococcal disease
 Meningococcal disease Meningococcal disease
Meningococcal diseasethuphan95
 
Bioterrorism
BioterrorismBioterrorism
Bioterrorismthuphan95
 
Chinese Mandarin Lesson 3.2
Chinese Mandarin Lesson 3.2Chinese Mandarin Lesson 3.2
Chinese Mandarin Lesson 3.2thuphan95
 
Chinese Mandarin Characters Lesson 5
Chinese Mandarin Characters Lesson 5Chinese Mandarin Characters Lesson 5
Chinese Mandarin Characters Lesson 5thuphan95
 
Mandarin Characters Lesson 6
Mandarin Characters Lesson 6Mandarin Characters Lesson 6
Mandarin Characters Lesson 6thuphan95
 

Mais de thuphan95 (20)

The rise of_islam
The rise of_islamThe rise of_islam
The rise of_islam
 
Islam
Islam  Islam
Islam
 
Judaism
Judaism Judaism
Judaism
 
American Revolution
American RevolutionAmerican Revolution
American Revolution
 
The Critical Period 1781-1789
The Critical Period 1781-1789The Critical Period 1781-1789
The Critical Period 1781-1789
 
Nationalism and economic development
Nationalism and economic developmentNationalism and economic development
Nationalism and economic development
 
Sectionalism
SectionalismSectionalism
Sectionalism
 
Political Development and Social Change
Political Development and Social Change Political Development and Social Change
Political Development and Social Change
 
Influenza
InfluenzaInfluenza
Influenza
 
Vector borne disease and Dengue
Vector borne disease and Dengue Vector borne disease and Dengue
Vector borne disease and Dengue
 
Vector Borne Diseases
Vector Borne DiseasesVector Borne Diseases
Vector Borne Diseases
 
Host pathogen interactions
Host pathogen interactionsHost pathogen interactions
Host pathogen interactions
 
Meningococcal disease
 Meningococcal disease Meningococcal disease
Meningococcal disease
 
HPV
HPVHPV
HPV
 
Cancer
CancerCancer
Cancer
 
Bioterrorism
BioterrorismBioterrorism
Bioterrorism
 
HIV/HPV
HIV/HPVHIV/HPV
HIV/HPV
 
Chinese Mandarin Lesson 3.2
Chinese Mandarin Lesson 3.2Chinese Mandarin Lesson 3.2
Chinese Mandarin Lesson 3.2
 
Chinese Mandarin Characters Lesson 5
Chinese Mandarin Characters Lesson 5Chinese Mandarin Characters Lesson 5
Chinese Mandarin Characters Lesson 5
 
Mandarin Characters Lesson 6
Mandarin Characters Lesson 6Mandarin Characters Lesson 6
Mandarin Characters Lesson 6
 

Último

3.12.24 Freedom Summer in Mississippi.pptx
3.12.24 Freedom Summer in Mississippi.pptx3.12.24 Freedom Summer in Mississippi.pptx
3.12.24 Freedom Summer in Mississippi.pptxmary850239
 
HỌC TỐT TIẾNG ANH 11 THEO CHƯƠNG TRÌNH GLOBAL SUCCESS ĐÁP ÁN CHI TIẾT - HK2 (...
HỌC TỐT TIẾNG ANH 11 THEO CHƯƠNG TRÌNH GLOBAL SUCCESS ĐÁP ÁN CHI TIẾT - HK2 (...HỌC TỐT TIẾNG ANH 11 THEO CHƯƠNG TRÌNH GLOBAL SUCCESS ĐÁP ÁN CHI TIẾT - HK2 (...
HỌC TỐT TIẾNG ANH 11 THEO CHƯƠNG TRÌNH GLOBAL SUCCESS ĐÁP ÁN CHI TIẾT - HK2 (...Nguyen Thanh Tu Collection
 
Material Remains as Source of Ancient Indian History & Culture.ppt
Material Remains as Source of Ancient Indian History & Culture.pptMaterial Remains as Source of Ancient Indian History & Culture.ppt
Material Remains as Source of Ancient Indian History & Culture.pptBanaras Hindu University
 
THYROID HORMONE.pptx by Subham Panja,Asst. Professor, Department of B.Sc MLT,...
THYROID HORMONE.pptx by Subham Panja,Asst. Professor, Department of B.Sc MLT,...THYROID HORMONE.pptx by Subham Panja,Asst. Professor, Department of B.Sc MLT,...
THYROID HORMONE.pptx by Subham Panja,Asst. Professor, Department of B.Sc MLT,...Subham Panja
 
VIT336 – Recommender System - Unit 3.pdf
VIT336 – Recommender System - Unit 3.pdfVIT336 – Recommender System - Unit 3.pdf
VIT336 – Recommender System - Unit 3.pdfArthyR3
 
Certification Study Group - Professional ML Engineer Session 3 (Machine Learn...
Certification Study Group - Professional ML Engineer Session 3 (Machine Learn...Certification Study Group - Professional ML Engineer Session 3 (Machine Learn...
Certification Study Group - Professional ML Engineer Session 3 (Machine Learn...gdgsurrey
 
3.14.24 The Selma March and the Voting Rights Act.pptx
3.14.24 The Selma March and the Voting Rights Act.pptx3.14.24 The Selma March and the Voting Rights Act.pptx
3.14.24 The Selma March and the Voting Rights Act.pptxmary850239
 
Metabolism , Metabolic Fate& disorders of cholesterol.pptx
Metabolism , Metabolic Fate& disorders of cholesterol.pptxMetabolism , Metabolic Fate& disorders of cholesterol.pptx
Metabolism , Metabolic Fate& disorders of cholesterol.pptxDr. Santhosh Kumar. N
 
Auchitya Theory by Kshemendra Indian Poetics
Auchitya Theory by Kshemendra Indian PoeticsAuchitya Theory by Kshemendra Indian Poetics
Auchitya Theory by Kshemendra Indian PoeticsDhatriParmar
 
Research Methodology and Tips on Better Research
Research Methodology and Tips on Better ResearchResearch Methodology and Tips on Better Research
Research Methodology and Tips on Better ResearchRushdi Shams
 
BÀI TẬP BỔ TRỢ TIẾNG ANH 11 THEO ĐƠN VỊ BÀI HỌC - CẢ NĂM - CÓ FILE NGHE (FRIE...
BÀI TẬP BỔ TRỢ TIẾNG ANH 11 THEO ĐƠN VỊ BÀI HỌC - CẢ NĂM - CÓ FILE NGHE (FRIE...BÀI TẬP BỔ TRỢ TIẾNG ANH 11 THEO ĐƠN VỊ BÀI HỌC - CẢ NĂM - CÓ FILE NGHE (FRIE...
BÀI TẬP BỔ TRỢ TIẾNG ANH 11 THEO ĐƠN VỊ BÀI HỌC - CẢ NĂM - CÓ FILE NGHE (FRIE...Nguyen Thanh Tu Collection
 
AUDIENCE THEORY - PARTICIPATORY - JENKINS.pptx
AUDIENCE THEORY - PARTICIPATORY - JENKINS.pptxAUDIENCE THEORY - PARTICIPATORY - JENKINS.pptx
AUDIENCE THEORY - PARTICIPATORY - JENKINS.pptxiammrhaywood
 
Awards Presentation 2024 - March 12 2024
Awards Presentation 2024 - March 12 2024Awards Presentation 2024 - March 12 2024
Awards Presentation 2024 - March 12 2024bsellato
 
DNA and RNA , Structure, Functions, Types, difference, Similarities, Protein ...
DNA and RNA , Structure, Functions, Types, difference, Similarities, Protein ...DNA and RNA , Structure, Functions, Types, difference, Similarities, Protein ...
DNA and RNA , Structure, Functions, Types, difference, Similarities, Protein ...AKSHAYMAGAR17
 
25 CHUYÊN ĐỀ ÔN THI TỐT NGHIỆP THPT 2023 – BÀI TẬP PHÁT TRIỂN TỪ ĐỀ MINH HỌA...
25 CHUYÊN ĐỀ ÔN THI TỐT NGHIỆP THPT 2023 – BÀI TẬP PHÁT TRIỂN TỪ ĐỀ MINH HỌA...25 CHUYÊN ĐỀ ÔN THI TỐT NGHIỆP THPT 2023 – BÀI TẬP PHÁT TRIỂN TỪ ĐỀ MINH HỌA...
25 CHUYÊN ĐỀ ÔN THI TỐT NGHIỆP THPT 2023 – BÀI TẬP PHÁT TRIỂN TỪ ĐỀ MINH HỌA...Nguyen Thanh Tu Collection
 
Arti Languages Pre Seed Send Ahead Pitchdeck 2024.pdf
Arti Languages Pre Seed Send Ahead Pitchdeck 2024.pdfArti Languages Pre Seed Send Ahead Pitchdeck 2024.pdf
Arti Languages Pre Seed Send Ahead Pitchdeck 2024.pdfwill854175
 
ICS2208 Lecture4 Intelligent Interface Agents.pdf
ICS2208 Lecture4 Intelligent Interface Agents.pdfICS2208 Lecture4 Intelligent Interface Agents.pdf
ICS2208 Lecture4 Intelligent Interface Agents.pdfVanessa Camilleri
 
UNIT I Design Thinking and Explore.pptx
UNIT I  Design Thinking and Explore.pptxUNIT I  Design Thinking and Explore.pptx
UNIT I Design Thinking and Explore.pptxGOWSIKRAJA PALANISAMY
 

Último (20)

3.12.24 Freedom Summer in Mississippi.pptx
3.12.24 Freedom Summer in Mississippi.pptx3.12.24 Freedom Summer in Mississippi.pptx
3.12.24 Freedom Summer in Mississippi.pptx
 
ANOVA Parametric test: Biostatics and Research Methodology
ANOVA Parametric test: Biostatics and Research MethodologyANOVA Parametric test: Biostatics and Research Methodology
ANOVA Parametric test: Biostatics and Research Methodology
 
HỌC TỐT TIẾNG ANH 11 THEO CHƯƠNG TRÌNH GLOBAL SUCCESS ĐÁP ÁN CHI TIẾT - HK2 (...
HỌC TỐT TIẾNG ANH 11 THEO CHƯƠNG TRÌNH GLOBAL SUCCESS ĐÁP ÁN CHI TIẾT - HK2 (...HỌC TỐT TIẾNG ANH 11 THEO CHƯƠNG TRÌNH GLOBAL SUCCESS ĐÁP ÁN CHI TIẾT - HK2 (...
HỌC TỐT TIẾNG ANH 11 THEO CHƯƠNG TRÌNH GLOBAL SUCCESS ĐÁP ÁN CHI TIẾT - HK2 (...
 
Material Remains as Source of Ancient Indian History & Culture.ppt
Material Remains as Source of Ancient Indian History & Culture.pptMaterial Remains as Source of Ancient Indian History & Culture.ppt
Material Remains as Source of Ancient Indian History & Culture.ppt
 
THYROID HORMONE.pptx by Subham Panja,Asst. Professor, Department of B.Sc MLT,...
THYROID HORMONE.pptx by Subham Panja,Asst. Professor, Department of B.Sc MLT,...THYROID HORMONE.pptx by Subham Panja,Asst. Professor, Department of B.Sc MLT,...
THYROID HORMONE.pptx by Subham Panja,Asst. Professor, Department of B.Sc MLT,...
 
VIT336 – Recommender System - Unit 3.pdf
VIT336 – Recommender System - Unit 3.pdfVIT336 – Recommender System - Unit 3.pdf
VIT336 – Recommender System - Unit 3.pdf
 
Certification Study Group - Professional ML Engineer Session 3 (Machine Learn...
Certification Study Group - Professional ML Engineer Session 3 (Machine Learn...Certification Study Group - Professional ML Engineer Session 3 (Machine Learn...
Certification Study Group - Professional ML Engineer Session 3 (Machine Learn...
 
t-test Parametric test Biostatics and Research Methodology
t-test Parametric test Biostatics and Research Methodologyt-test Parametric test Biostatics and Research Methodology
t-test Parametric test Biostatics and Research Methodology
 
3.14.24 The Selma March and the Voting Rights Act.pptx
3.14.24 The Selma March and the Voting Rights Act.pptx3.14.24 The Selma March and the Voting Rights Act.pptx
3.14.24 The Selma March and the Voting Rights Act.pptx
 
Metabolism , Metabolic Fate& disorders of cholesterol.pptx
Metabolism , Metabolic Fate& disorders of cholesterol.pptxMetabolism , Metabolic Fate& disorders of cholesterol.pptx
Metabolism , Metabolic Fate& disorders of cholesterol.pptx
 
Auchitya Theory by Kshemendra Indian Poetics
Auchitya Theory by Kshemendra Indian PoeticsAuchitya Theory by Kshemendra Indian Poetics
Auchitya Theory by Kshemendra Indian Poetics
 
Research Methodology and Tips on Better Research
Research Methodology and Tips on Better ResearchResearch Methodology and Tips on Better Research
Research Methodology and Tips on Better Research
 
BÀI TẬP BỔ TRỢ TIẾNG ANH 11 THEO ĐƠN VỊ BÀI HỌC - CẢ NĂM - CÓ FILE NGHE (FRIE...
BÀI TẬP BỔ TRỢ TIẾNG ANH 11 THEO ĐƠN VỊ BÀI HỌC - CẢ NĂM - CÓ FILE NGHE (FRIE...BÀI TẬP BỔ TRỢ TIẾNG ANH 11 THEO ĐƠN VỊ BÀI HỌC - CẢ NĂM - CÓ FILE NGHE (FRIE...
BÀI TẬP BỔ TRỢ TIẾNG ANH 11 THEO ĐƠN VỊ BÀI HỌC - CẢ NĂM - CÓ FILE NGHE (FRIE...
 
AUDIENCE THEORY - PARTICIPATORY - JENKINS.pptx
AUDIENCE THEORY - PARTICIPATORY - JENKINS.pptxAUDIENCE THEORY - PARTICIPATORY - JENKINS.pptx
AUDIENCE THEORY - PARTICIPATORY - JENKINS.pptx
 
Awards Presentation 2024 - March 12 2024
Awards Presentation 2024 - March 12 2024Awards Presentation 2024 - March 12 2024
Awards Presentation 2024 - March 12 2024
 
DNA and RNA , Structure, Functions, Types, difference, Similarities, Protein ...
DNA and RNA , Structure, Functions, Types, difference, Similarities, Protein ...DNA and RNA , Structure, Functions, Types, difference, Similarities, Protein ...
DNA and RNA , Structure, Functions, Types, difference, Similarities, Protein ...
 
25 CHUYÊN ĐỀ ÔN THI TỐT NGHIỆP THPT 2023 – BÀI TẬP PHÁT TRIỂN TỪ ĐỀ MINH HỌA...
25 CHUYÊN ĐỀ ÔN THI TỐT NGHIỆP THPT 2023 – BÀI TẬP PHÁT TRIỂN TỪ ĐỀ MINH HỌA...25 CHUYÊN ĐỀ ÔN THI TỐT NGHIỆP THPT 2023 – BÀI TẬP PHÁT TRIỂN TỪ ĐỀ MINH HỌA...
25 CHUYÊN ĐỀ ÔN THI TỐT NGHIỆP THPT 2023 – BÀI TẬP PHÁT TRIỂN TỪ ĐỀ MINH HỌA...
 
Arti Languages Pre Seed Send Ahead Pitchdeck 2024.pdf
Arti Languages Pre Seed Send Ahead Pitchdeck 2024.pdfArti Languages Pre Seed Send Ahead Pitchdeck 2024.pdf
Arti Languages Pre Seed Send Ahead Pitchdeck 2024.pdf
 
ICS2208 Lecture4 Intelligent Interface Agents.pdf
ICS2208 Lecture4 Intelligent Interface Agents.pdfICS2208 Lecture4 Intelligent Interface Agents.pdf
ICS2208 Lecture4 Intelligent Interface Agents.pdf
 
UNIT I Design Thinking and Explore.pptx
UNIT I  Design Thinking and Explore.pptxUNIT I  Design Thinking and Explore.pptx
UNIT I Design Thinking and Explore.pptx
 

Sheep eye dissection

  • 1. Eye Eye Eye ! • By the end of the dissection students will be able to identify various parts of the eye.
  • 2. EYE The eye is an extension of the brain It helps us take in light information from our surroundings. This is how!
  • 3. Eye brain proximity • Can you see : • the optic nerve bundle? • Spinal cord?
  • 4. What are the parts of the eye? • Let’s use a diagram to help us get familiar with the parts and pronounce them correctly!
  • 5. Cornea Cornea- transparent membrane that covers iris and pupil. Focuses light on the retina.
  • 6. Pupil, Iris, Sclera Pupil- hole passes different amounts of light Iris- colored part of the eye that controls the size of the pupil Sclera- “whites” of the eye that forms outer covering
  • 7. Aqueous Humor, Ciliary Muscle, Lens Aqueous Humor- nutritious fluid between the iris and the cornea. As we age, it breaks down and we begin to see “floaters” Ciliary Muscles- produces aqueous humor and controls lens shape Lens- Bends light rays to the back of the eye –retina. Elastic so change in shape allows for focus on objects close up or far away
  • 8. Retina • Full of light receptors which are sensitive to: • Cones- Colour • Rods- Light levels • Massive blood supply is also needed Blind Spot- site of optic nerve connection
  • 9. Vitreous Humor, Blind Spot, Optic Nerve, Vitreous Humor- transparent jelly-like fluid that fills the eye and refracts light Blind Spot- area where optic nerve attaches. No retina is located there so information cannot be picked up; “Blind” Optic Nerve- sends messages picked up by retina to the brain
  • 10. Choroid Layer, Tapetum lucidum Choroid Layer- lies between the sclera and the retina it provides the blood supply to the eye. Tapetum lucidum- iridescent film under the retina that provides animals with “night vision”
  • 11. Eye Dissection • Before we go over the dissection, let’s review the parts of the eye and their function
  • 12. Cross section You must know: 1. Lens 2. Cornea 3. Aqueous humor 4. Pupil 5. Iris 6. Ciliary Muscle 7. Sclera 8. Vitreous Humor 9. Retina 10. Blind Spot 11. Choroid Layer 12. Optic Nerve 13. Tapetum Lucidum Sclera Blind Spot Ciliary Choroid Layer Taptem lucidum
  • 13. Cut away fat using scissors
  • 17. • Select a place to make an incision of the sclera midway between the cornea and optic nerve. Use the point of a surgical scissors to make a small cut through the sclera. Fluid should ooze out of the eyeball when you have cut deeply enough.
  • 19. • Arrange the two hemispheres of the eye as you see in the photograph. • Observe the semi-fluid vitreous humor that fills the central cavity of the eye. It is transparent in the living eye but might be cloudy in the preserved specimen
  • 20. • The retina lines the the posterior cavity of the eye and extends forward to the ciliary body. Use your probe to lift and pull the retina back from the underlying choroid layer. • Notice that the retina is only firmly attached to the choroid at one place. This region is the optic disc or blind spot.
  • 21. Internal Eye Structure – Posterior Section
  • 23. Internal Eye Structures – Anterior Section
  • 24. Remove the lens and place against newspaper to see that it is a magnifier!
  • 25. • When the lens is removed, an opening, allowing light to enter the eye is seen. This opening, the pupil is located in the center of the iris. Note the oblong shape of the sheep pupil, in humans the pupil is circular. • The back side of the iris can be seen just above the pointer in the photograph.
  • 27. Can you identify the parts? You will need to to get credit during the lab
  • 28. 1. Cornea 4. Iris 7. Ciliary Body 10. Retina 2. Sclera 5. Pupil 8. Choroid 11. Lens 3. Optic Nerve 6. Ora Serrata 9. Tapetum Lucidum 12. Vitreous Humor
  • 29. 1. Cornea 2. Sclera 3. Optic Nerve 4. Iris 5. Pupil 6. Ora Serrata (you do not have to know this structure!) 7. Ciliary Body 8. Choroid 9. Tapetum Lucidum 10. Retina 11. Lens 12. Vitreous Humor
  • 30. Clean up! • Follow clean up procedures: – Place all remains in a zip lock bag and place it in your box. – All dissecting instruments, tray and gel must be thoroughly washed in water. – Remove the paper towel from the tray and dispose of it in the trash bag. – All used gloves are to be disposed of in the trash bag. – All goggles returned to the designated place. – Lab stations are clean and free of water/waste. – Each person washes their hands with soap and water.