tight junctions
gall bladder and pancreas
Prostate gland
Urine is sterile until it passes out of the urethra. it then begins to accumulate bacteria from the surrounding area, so its sterile for a brief.
The bladder.
The bladder.
Tight Junctions
tight junction
The bladder's contents is drained out of the body through the urethra.
tight junction
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It is called the "Swim Bladder".
There s the sphincter around the opening of the bladder.
The urethra extends from the bladder and carries its contents to the exterior of the body.
gall bladder and pancreas
Smooth muscle surrounding the bladder pushes urine out of the urethra.
An incision is made across the abdomen, and the bladder is exposed. The bladder is separated from surrounding tissues.
With the sphincter muscle, found at the junction of the bladder and the urethra. Involuntary muscles. There is a whole part of the brain that controls involuntary responses and functions. Example:breathing, heart pumping blood.