Complement proteins:
All of the answers are correct
Attract phagocytes
Promote inflammation
Destroy cells
The Correct Answer is A
A. All of the answers are correct — Complement proteins are part of the immune system and contribute to defense in multiple ways:
B. They attract phagocytes to the site of infection through chemotaxis, enhancing the immune response.
C. They promote inflammation by increasing vascular permeability and attracting immune cells.
D. They can destroy cells by forming the membrane attack complex (MAC), which creates pores in the membranes of pathogens, leading to cell lysis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Chyle is a type of lymphatic fluid rich in fats absorbed from the intestines, but it is not the primary basis of all lymphatic fluid.
B. Secretions of lymph nodes contribute immune cells and filtering functions but do not form the main component of lymph.
C. Plasma is the correct answer. Lymphatic fluid originates from interstitial fluid, which in turn is derived from plasma that leaks out of capillaries. This fluid enters the lymphatic system and becomes lymph.
D. MALT (Mucosa-associated lymphoid tissue) is involved in immune responses in mucosal membranes but does not form the basis of lymphatic fluid.
Correct Answer is C
Explanation
A. Lymph from the lower body drains into the thoracic duct.
B. Lymph from the left side of the head drains into the thoracic duct as well, which eventually empties into the systemic circulation.
C. Lymph from the right arm does not enter the thoracic duct. It drains into the right lymphatic duct, which then empties into the systemic circulation.
D. Lymph from the left arm drains into the thoracic duct along with lymph from other parts of the body.
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