Pelvis male video          Layers of pelvis links       Electronic dissector    Structure locator

This structure is placed anteriorly in the lesser pelvis. It is responsible for storing urine before voiding.

Arteries of bladder

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Superior vesical artery

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Inferior vesical artery

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Vesical branches of the obturator artery

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Vesical branches of the inferior gluteal arteries

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Vesical branches of the uterine artery

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Vesical branch of the vaginal artery

The last two are found only in females.

Veins

The veins that drain the urinary bladder form a plexus - vesical plexus on the inferolateral surfaces of the bladder. They drain in to the internal iliac vein

Nerves

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These are autonomic nerves from the vesical plexus. They are parasympathetic (non-vagal) motor nerves from S2-4; nervi erigentes.

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Sympathetic motor fibers from the  lumbar splanchnic nerves which relay in the inferior mesenteric ganglion of the inferior mesenteric plexus. Their postganglionic fibers supply the urinary bladder. Some fibers also reach the bladder neck in the male where they provide closure of sphincter on the bladder neck as a sympathetic genital function concomitant with seminal emission or ejaculation which occurs as a result of sympathetic discharge. This prevents retrograde ejaculation into the urinary bladder. In the female, such fibers are either very small or do not exist. This suggests they may have no genital function in the female and may not even exist as a functioning sphincter in the first place.

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Parasympathetic sensory nerves  are also from the nervi erigentes (S2-4).

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Sympathetic sensory nerves T11-12; and L1-4.

 

 

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Creator: Oluwole Ogunranti

 
Pelvis female video          Layers of pelvis links       Electronic dissector    Structure locator

 

 

 

 

 

 

 

 

 

 

 

 

    

 

    
DIGITAL LOCATOR OF URINARY BLADDER. Layer 1 Skin of pelvis- anterior abdominal wall and perineum). Layer 2- Superficial aspect of pelvis.  Layer 3 - intermediate dissection of male pelvis. Layer  4 - deep dissection of male pelvisLayer 5- deepest layer of male pelvis. Layer 6- layer of pelvic floor of male pelvis. Layer  7 - layer of pelvic bones. Roll over to label;Click to display pages, click the blinking end page to demonstrate urinary bladder page. Layer 5 of male pelvis regional locator

 

 

 

 


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