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There are two. "The internal sphincter controls the bladder's opening into the urethra, and the external sphincter (the pelvic muscles) controls the opening of the urethra below the prostate. In women, there is little definition between the internal and external sphincters."

-Rosdahl, Caroline, & Kowalski, Mary. (2008). Textbook of basic nursing. 530 Walnut Street, Philadelphia PA 1910: Lippincott Williams & Wilkins.

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14y ago
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14y ago

40 including the eye, mouth, esophagus, urethra, stomach, upper intestiens, lower intestines, anus etc.

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13y ago

one, that closes the anus

^ There are actually two sphincters that work to close the anus. one is smooth muscle which sends the message to your brain that you need to go

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12y ago

1... unless you have more than 1 urethra

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Q: How many sphincters in urinary system?
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Related questions

Where can a sphincter be found in the urinary system also what is its function?

A sphincter is a circular band of muscle tissue that, when contracted, cuts off the flow of material from one place to another. There are two urinary sphincters, one at the base of the bladder and one at the pelvic canal along the urethra. The purpose of both sphincters is to prevent urinary leakage.


How do sphincters work in the gastrointestinal tract?

Sphincters are in the digestive tract and urinary tract. They act as one-way doors to prevent backflow. So once foodstuffs enter the small intestines, it cannot go backward back into the stomach.


Muscles that encircle tubes and act as circular valves are called?

Sphincter muscles. They are smooth muscles found in various parts of the body, such as the digestive system and urinary tract, and control the opening and closing of tubes or openings.


What system comes after the urinary system?

When urine exits the urinary system, it is at the exterior of the body. There is no system "after" the urinary system.


Is the urinary system sterile or nonsterile?

The urinary system is sterile


What don't the urinary system do?

It do not do functions not that are to unrelated that urinary system do.


Names of the urinary system organs?

the urinary system it is the meaning is ta meaning im jusk kiddding it is the urinary system im so happy to tell na urinary system


How many organs are there in urinary system?

There are 2 the Bladder and the Kidney


Is the bladder in the excretory system?

NO, the urinary bladder is part of the urinary system.


Which system of the body contains the ureters?

The ureters are part of the urinary system. There are two ureters, one coming from each kidney. They attach one on each side at the top/sides of the urinary bladder. They carry urine from the kidneys to the urinary bladder.


What system removed metabolic wastes from the body?

Urinary System (A+)


Why salty foods are bad to urinary system?

because it will harm your urinary system