Select the Description Below That Illustrates a Difference Between a Sphincter

question 76

Multiple Choice

Select the description below that illustrates a difference between a sphincter and circular muscle.

• A) A sphincter is a thickening of circular muscle that can prevent the movement of digesting materials while circular muscle is involved in propulsion digesting material.
• B) Sphincters are found throughout the GI tract while circular muscle is found only in the proximal portion of the GI tract.
• C) A sphincter is composed of smooth muscle while circular muscle is composed of skeletal muscle tissue.
• D) Sphincters are found in the proximal portion of the GI tract while circular muscle is found in the distal portions.

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Definitions:

Cirrhosis

A chronic liver disease characterized by replacement of liver tissue with fibrosis, leading to loss of liver function.

Splenomegaly

An enlargement of the spleen, often associated with various diseases affecting blood or immune system.

Jejunum

The middle section of the small intestine in humans and most higher vertebrates, between the duodenum and the ileum.

Duodenum

The first part of the small intestine immediately beyond the stomach, used for the initial processing of nutrients.