The document discusses the anterior triangle of the neck, which is divided into 4 triangles: the carotid, digastric, submental, and muscular triangles. It focuses on the carotid triangle, outlining its boundaries, floor, and contents. The carotid triangle contains the common carotid artery, internal carotid artery, and external carotid artery. It is also bounded by the sternocleidomastoid muscle superiorly and the posterior belly of the digastric muscle and omohyoid muscle inferiorly. The triangle contains numerous arteries, nerves, and veins, including the vagus nerve, internal jugular vein, and branches of the carotid arteries.

1. ANTERIOR
TRIANGLE OF
NECK
(Page 36)
Dr. Sherif Fahmy

2. Anterior triangle is divided
into:
•1- Carotid triangle.
•2- Digastric triangle.
•3- Submental triangle.
•4- Muscular triangle.
Dr. Sherif Fahmy

3. Sterno-
mastoid m.
Superior belly
of omohyoid
m.
Digastric m.
Lower
border of
body of
mandible
Midline of
neck
Carotid
triangle
Muscular
triangle
Digastric
triangle
Submental
triangle
Dr. Sherif Fahmy
Dr. Sherif Fahmy

4. CAROTID TRIANGLE
(Page 38)
Dr. Sherif Fahmy

5. Boundaries of
Carotid Triangle
Dr. Sherif Fahmy

6. Sterno-
mastoid m.
Superior belly
of omohyoid
m.
Posterior belly of
digastric m.
Carotid
triangle
Dr. Sherif Fahmy
Dr. Sherif Fahmy

7. Floor of Carotid
Triangle
Dr. Sherif Fahmy

8. Superior belly of
omohyoid m.
Posterior belly of
digastric m.
Sterno-
mastoid m.
Hyoid bone
Thyro-hyoid m.
Hyo-glossus m.
Middle constrictor m.
Inferior constrictor m.
Dr. Sherif Fahmy
Dr. Sherif Fahmy

9. Contents of
Carotid Triangle
Dr. Sherif Fahmy

10. A- Arteries
Dr. Sherif Fahmy

11. Common
carotid artery
Internal
carotid art.
External
carotid art.
Superior
thyroid art.
Lingual
art.
Facial art.
Occipita
l art.
Dr. Sherif Fahmy

12. B- Nerves & Veins
Dr. Sherif Fahmy

13. Spinal
accessor
y n.
Vagus nerve
Hypoglossa
l n.
Descenden
s
hypoglossi
Nerve to
thyrohyoid m.
Internal jugular vein
Ansa cervicalis
Descenden
s cervicalis
Dr. Sherif Fahmy

14. Vagus
nerve
Superior
laryngeal nerve
Internal
laryngeal
nerve
External
laryngeal nerve
Dr. Sherif Fahmy
Dr. Sherif Fahmy

15. Applied Anatomy
Dr. Sherif Fahmy

16. Common carotid art.
Internal carotid art.
Carotid sinus
Carotid body
Glossopharyngea
l nerve
Dr. Sherif Fahmy
Dr. Sherif Fahmy