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ANATOMY OF URINARY BLADDER
Prabin Kumar Bam
MBBS student, Chitwan Medical College
Bharatpur, Nepal
Introduction
• The urinary bladder is a muscular organ which
lies in the anterior part of pelvic cavity and
helps in the s...
GROSS FEATURES
An empty bladder is tetrahedral in shape & has:
1. Apex
2. Base or fundus
3. Neck
4. 3 surfaces: superior, ...
Gross Features
2/1/2019 4
Relations
Apex:
 Directed forward.
 Connected to the umblicus
by the median umblical
ligament.
Base:
 Directed backward...
In female: Vagina and cervix of the uterus.
Neck:
Inferior and most fixed part.
In male: Related to prostate. Surrounde...
Superior surface:
 In male: Peritoneum, coils
of ileum & sigmoid colon.
 In female: Peritoneum
(covers the greater part)...
Puboprostatic ligaments in male &
pubovesical ligaments in female.
Bladder Relations
Interior of the bladder
• Mucosa of the bladder
shows irregular folds
except in a small
triangular area over the
base.
• T...
• The ureters open at the posterolateral angle of
the trigone.
• Uvula vesicae: It is a small elevation on the
trigone pos...
Ligaments of the bladder
True ligaments
 They are the condensations of
pelvic fascia.
 They provide support to the
bladd...
Ligaments
HISTOLOGY OF BLADDER
 The wall of urinary bladder shows following features:
i. Inner mucosa
• Lined by transitional epith...
Histology of bladder
2/1/2019 16
Urinary bladder (Anatomy)
Urinary bladder (Anatomy)
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Anatomy of urinary bladder, introduction, gross features, histology, relations, interior of the bladder, trigone of bladder, uvula vesicae, ligaments of urinary bladder, histology of urinary bladder,

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Urinary bladder (Anatomy)

  1. 1. ANATOMY OF URINARY BLADDER Prabin Kumar Bam MBBS student, Chitwan Medical College Bharatpur, Nepal
  2. 2. Introduction • The urinary bladder is a muscular organ which lies in the anterior part of pelvic cavity and helps in the storage of urine. • Shape, size and position of bladder varies according to the amount of urine contained in it. • An empty bladder lies entirely within the pelvis but as it fills it extends into abdominal cavity.
  3. 3. GROSS FEATURES An empty bladder is tetrahedral in shape & has: 1. Apex 2. Base or fundus 3. Neck 4. 3 surfaces: superior, right & left inferolateral. 5. 4 borders: anterior, posterior & 2 lateral lateral borders.
  4. 4. Gross Features 2/1/2019 4
  5. 5. Relations Apex:  Directed forward.  Connected to the umblicus by the median umblical ligament. Base:  Directed backward. It is related to;  In male: Vas deferens, seminal vesicles, rectum, rectovesical pouch and peritoneum.
  6. 6. In female: Vagina and cervix of the uterus. Neck: Inferior and most fixed part. In male: Related to prostate. Surrounded by smooth muscle fibres which form preprostatic sphincter. In female: Related to pelvic fascia.
  7. 7. Superior surface:  In male: Peritoneum, coils of ileum & sigmoid colon.  In female: Peritoneum (covers the greater part) & Uterine cervix. Inferolateral surfaces:  Related to the pubis, the retropubic fat, levator ani & the obturator internus in both male and female.
  8. 8. Puboprostatic ligaments in male & pubovesical ligaments in female.
  9. 9. Bladder Relations
  10. 10. Interior of the bladder • Mucosa of the bladder shows irregular folds except in a small triangular area over the base. • This area is k/a trigone of the bladder. Here, the mucosa is smooth. • Internal urethral orifice opens in the apex of this trigone.
  11. 11. • The ureters open at the posterolateral angle of the trigone. • Uvula vesicae: It is a small elevation on the trigone posterior to the urethral orifice produced by median lobe of prostate.
  12. 12. Ligaments of the bladder True ligaments  They are the condensations of pelvic fascia.  They provide support to the bladder. 1. Lateral true ligament 2. Lateral puboprostatic ligament 3. Medial puboprostatic ligament 4. Medial umblical ligament 5. Posterior ligament 2/1/2019 13 False ligaments  They are the peritoneal folds.  They don’t provide support to the bladder. 1. Median umblical fold 2. Medial umblical fold 3. Lateral false ligament 4. Posterior false ligament
  13. 13. Ligaments
  14. 14. HISTOLOGY OF BLADDER  The wall of urinary bladder shows following features: i. Inner mucosa • Lined by transitional epithelium. i. Middle muscle layer • Consists of outer & inner longitudinal muscle layer and middle circular/ oblique fibres. • The smooth muscle is also called detrusor muscle whose contraction helps in voiding of urine. i. Outer serous layer: It is the peritoneum of bladder. 2/1/2019 15
  15. 15. Histology of bladder 2/1/2019 16
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Anatomy of urinary bladder, introduction, gross features, histology, relations, interior of the bladder, trigone of bladder, uvula vesicae, ligaments of urinary bladder, histology of urinary bladder,

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