URINARY BLADDER:
1.INTRODUCTION: it is a reservoir
for urine
2.SITUATION: it lies in the pelvic cavity.
3.MEASURMENTS: Its depending on the amount of urine it
coulaius.
4.SHAPE: pear shaped & fills C urine it because
oval shape
- organs associated with the urinary bladder
5.STRUCTURE:
IT CONSISTS 3 SURFACES
-
Superior surface
-
Autrior surface
-
Posterior surface
the Bladder wall is Composed of 3 layers
OUTER LAYER:-
-
layer
of loose connective tissues,
-
It contains Blood & Lyuphenodes & nerves
-
It covered on the upper surface by the peritneum
MIDDLE LAYER:
It
contains smooth accucle fibres & elastic tissue,
The mucosal –lined with Transitional
epithelium.
Capacity of the urinary bladder 300-400ml
urinate initiated.
Total capacity is rarely more than 600ml.
FUNCTIONS:
Storage (or) reserviour for the urine.
URETHRA
The urethra is a canal extending from the
neck of the bladder to the exterior.
Its length differs in the male compare to the
female.
THE FEMALE URETHRA is approximately 4cm long.
It runs downwards and forwards behind the
Symphysis pubis and opens at the external urethral orifice just in front of
vagina.
It is under voluntary control.
THE MALE URETHRA:
It provides a common pathway for the flow of
urine and Semen.
It is about 19 to 20 cm long.
It is also under voluntary control.
It consists of 3 layers.
1.
The muscular layer.
2.
Sub mucosa layer.
3.
Mucosa layer.
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