Which of the following is a function of the lymphatic system?
Oxygen delivery to tissues
Thermoregulation
Transport of absorbed amino acids from the intestine to the liver
Absorption of digested fats
The Correct Answer is D
A. Oxygen delivery to tissues is the primary function of the circulatory system, not the lymphatic system.
B. Thermoregulation is primarily carried out by the circulatory system and other mechanisms like sweating, not the lymphatic system.
C. The transport of absorbed amino acids from the intestine to the liver is a function of the circulatory system, specifically through the hepatic portal vein, not the lymphatic system.
D. The lymphatic system is involved in the absorption of digested fats through specialized lymphatic capillaries called lacteals in the small intestine. These lacteals absorb fats and transport them into the lymphatic circulation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. An antigen is any foreign substance (such as bacteria, viruses, or toxins) that triggers an immune response in the body. The immune system recognizes and responds to antigens, typically by producing antibodies.
B. Inflammation is a response of the body to injury or infection, characterized by redness, heat, swelling, and pain, but it is not a foreign substance itself.
C. An allergen is a specific type of antigen that causes an allergic reaction. While all allergens are antigens, not all antigens are allergens.
D. A lymphocyte is a type of white blood cell involved in the immune response, but it is not a foreign substance. Lymphocytes help recognize and respond to antigens.
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.
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