OVERVIEW OF THE IMMUNE SYSTEM
LYMPHATIC AND IMMUNE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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lymph is composed mostly of water that has escaped from the blood
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lymphatic capillaries are very permeable
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lymph nodes are concentrated mostly near the heart
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lymph nodes filter unwanted substances from body fluids
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Detailed explanation-1: -The answer is c). Lymph does not contain neutrophils, nor are neutrophils produced in the lymph nodes.
Detailed explanation-2: -The correct answer is A. Lymphatic vessels pass through lymph nodes. This allows the lymph to be filtered as it travels through the lymph nodes. The filtration system in the lymph nodes removes antibodies and pathogens and stimulates the immune responses as needed.
Detailed explanation-3: -Answer and Explanation: The statement that lymph is not a part of the lymphatic system is false. The primary function of the lymphatic system is to produce and transport lymph around the body.
Detailed explanation-4: -Answer and Explanation: Regarding which statement above concerning lymph nodes is false, letter choice A. Immune system cells are only located in the cortex would be considered a false statement.
Detailed explanation-5: -They are widely distributed throughout the body along the lymphatic pathways where they filter the lymph before it is returned to the blood. Lymph nodes are not present in the central nervous system. There are three superficial regions on each side of the body where lymph nodes tend to cluster.