Urinary Bladder Anatomy

Anatomy Of Urinary Bladder

• It stores the urine.

• It is present in the pelivic cavity just behind the pubic symphysis.

•  Distend with urine enlarge upwards and enters the lower part of the abdominal cavity.

• When empty it is tetrahydron in shape. When it is distended it becomes ovoid in in shape.

Parts :

• When empty the bladder has apex, base and neck. The neck is continued downwards as urethra. It has 4 borders. Anterior border, Posterior border and two lateral borders.

• It has 4 surfaces Superior surface, Posterior surface, and 2 intero lateral surfaces.
• In females behind the base of the bladder, uterus is present.

• In males, in contact with the base of the bladder a pair of seminal vesicles and vas deferens are present.

• Within the wall of the urinary bladder, 4 layers are present from inside outward they are mucosa, sub mucosa, muscular layer and serosa.

• The mucosa of the bladder is drawn into temporary folds which will disappear when the bladder is filled with urine.

• These folds will not be present in the inner aspect of the base. This area is Slure in shape which is called as internal trigone.

•  The two supero lateral angles of trigene will have openings of trigene will have openings of ureters.

•  At the inferior angle of the trigone, there is internal urethral meatus which is the communication between the bladder and urethra.

• Arterial Supply : Superior and Inferior vesical arteries.

• Venous Drainage : Vesical flexes of vein.

• Nerve Supply : Sympathetic and parasympathetic.

Applied Anatomy :

Cystitis : Inflammation of urinary bladder is called as cystitis.

Urinary Incontinence : Loss of control on mixturation is called as urinary incontinence.

        Download In Pdf                  DOWNLOAD 

Related Posts :