Question

What are sphincter muscles? The circular muscles that act as a valve is called sphincter muscles.

Answer 1

A sphincter is a circular muscle that normally maintains constriction of a natural body passage or orifice and which relaxes as required by normal physiological functioning. ... Sphincters relax at death, often releasing fluids and faeces.

Answer 2

Step-by-step explanation:

muscle that normally maintains constriction of a natural body passage or orifice and which relaxes as required by normal physiological functioning. ... Sphincters relax at death, often releasing fluids and faeces.