In the body, 80% of all lymphocytes, a type of immune system cell, are thought to be present in the
A) small intestine.
B) large intestine.
C) appendix.
D) stomach.
E) mouth.

Question

Quizplus · Accepted Answer

The small intestine is home to the majority of lymphoid tissue in the body, including Peyer's patches, which are clusters of lymphoid follicles that contain high concentrations of lymphocytes. This makes the small intestine the site of active immune surveillance and response.

In the Body, 80% of All Lymphocytes, a Type of Immune