Where in the small intestines are lymphocytes, plasma cells, and macrophages produced?
A)Brush border
B)Microvilli
C)Lamina propria
D)Crypts of Lieberkühn

Question

Quizplus · Accepted Answer

The lamina propria, which is a connective tissue layer of the mucous membrane, lies beneath the epithelial cells of the villi and contains lymphocytes, plasma cells, which produce immunoglobulins and macrophages. Together the microvilli create a mucosal surface known as the brush border. The villi and microvilli greatly increase the surface area available for absorption. Between the bases of the villi are the crypts of Lieberkühn (intestinal glands), which extend to the submucosal layer. Undifferentiated cells arise from stem cells at the base of the crypt and move toward the tip of the villus, maturing to become columnar epithelial secretory cells (water, electrolytes, and enzymes) and goblet cells (mucus).

Where in the Small Intestines Are Lymphocytes, Plasma Cells, and Macrophages