{"version":"1.0","type":"link","title":"Sphincter - Newikis","description":"A sphincter is a circular muscle that normally maintains constriction of a natural body passage or orifice and relaxes as required by normal physiological functioning. Sphincters are found in many animals. There are over 60 types in the human body,[citation needed] some microscopically small, in…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400}