Areas of lymphoid tissue specifically found in the gastrointestinal tract are termed:
GALT
Lacteals
Kupffer cells
MALT
The Correct Answer is A
A. GALT stands for Gut-Associated Lymphoid Tissue, which refers to lymphoid tissue found in the gastrointestinal tract, including structures like Peyer's patches and the appendix, that play a role in immune defense.
B. Lacteals are specialized lymphatic capillaries found in the small intestine, responsible for absorbing digested fats, not lymphoid tissue.
C. Kupffer cells are macrophages located in the liver, responsible for filtering the blood, not in the gastrointestinal tract.
D. MALT stands for Mucosa-Associated Lymphoid Tissue, which refers to lymphoid tissue found in mucosal membranes throughout the body, including the gastrointestinal tract, but GALT is the specific term for lymphoid tissue in the gut.
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Related Questions
Correct Answer is B
Explanation
A. GALT (Gut-associated lymphoid tissue) includes Peyer patches, which are found in the lining of the small intestine and play a key role in immune surveillance of the gut.
B. All of the answers are correct: Since all the listed options correctly relate to Peyer patches, the most comprehensive and correct choice is B.
C. MALT (Mucosa-associated lymphoid tissue) is a broader category that includes GALT as a subset, so Peyer patches are also part of MALT.
D. Peyer patches are part of the lymphatic system, contributing to the body's immune defense mechanisms.
Correct Answer is B
Explanation
A. Suppression of the immune response is primarily carried out by regulatory T cells, not B cells.
B. B cells are responsible for the production of antibodies. When activated, they differentiate into plasma cells, which secrete antibodies that target specific antigens (pathogens).
C. Phagocytosis is mainly performed by macrophages and neutrophils, not by B cells.
D. Direct destruction of foreign cells is a function typically carried out by cytotoxic T cells, not B cells.
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