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The circular ring of muscle located at the entrance and exit of the stomach is referred to as a "sphincter" - the one at the entrance to the stomach is referred to as the cardiac sphincter, and the one at the exit of the stomach to the small intestines is referred to as the pyloric sphincter.
The circular ring of muscle located at the entrance and exit of the stomach is referred to as a "sphincter" - the one at the entrance to the stomach is referred to as the cardiac sphincter, and the one at the exit of the stomach to the small intestines is referred to as the pyloric sphincter.
The only muscle that is a functional part of the capillary system are part of the pre-capillary sphincters. It is smooth muscle encircling the arterial end of a capillary and controls the blood flow. Not every cell is getting blood at every second for seconds at a time capillary can be shut of to direct blood to other parts of the tissue that need it.
Pyloric sphincter is located at the base of the stomach and is the contracting ring of muscle which guards the entrance of the to small intestine.
Capillary beds of the muscle
The only muscle that is a functional part of the capillary system are part of the pre-capillary sphincters. It is smooth muscle encircling the arterial end of a capillary and controls the blood flow. Not every cell is getting blood at every second for seconds at a time capillary can be shut of to direct blood to other parts of the tissue that need it.
The ring of muscle at the entrance to the stomach is the lower esophageal sphincter. This muscle is normally contracted to close the esophagus. At the lower end of the stomach food passes through the pyloric sphincter and into the duodenum of the small intestine.
Capillary beds of the muscles
It is Important to pack tightly in order to prevent the entrance of air into the capillary tube.
The cervix, or cervix uteri, is the ring of muscle found at the base of the uterus.
In his ring entrance
A Metarteriole (or arterial capillary or precapillary sphincter) is a short vessel(s) that link arterioles and capillaries. Instead of a continuous tunica media, they have individual muscle cells placed a short distance apart, each forming a precappilary sphincter that encircles the entrance to one capillary. Constriction of these sphincters reduces or shuts off blood flow through their respective capillaries and diverts blood to tissues or organs elsewhere.