Macrophages and Monocytes found throughout the body make up the:
Appendix
Reticuloendothelial system
Peyer patches
Tonsils
The Correct Answer is B
A. The appendix is an organ that contains lymphoid tissue and plays a role in immune function, but it does not specifically refer to macrophages and monocytes.
B. The reticuloendothelial system (also known as the mononuclear phagocyte system) consists of macrophages and monocytes found throughout the body. These cells are part of the immune system and are responsible for phagocytosis, or the engulfing and digesting of pathogens, dead cells, and debris.
C. Peyer's patches are clusters of lymphoid tissue found in the small intestine that monitor and respond to pathogens in the digestive tract.
D. Tonsils are lymphoid tissues located in the throat, playing a role in immune defense, but they are not part of the reticuloendothelial system.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Lymphatic capillaries do contain cells, specifically endothelial cells that form the walls of the capillaries.
B. Lymphatic capillaries are blind-ended, meaning they have an open end that begins the collection of interstitial fluid (lymph), unlike blood capillaries, which form continuous loops.
C. Lymphatic capillaries are highly permeable to water, solutes, and larger particles, which is one reason they are efficient at collecting interstitial fluid.
D. Lymphatic capillaries do not contain a muscular layer. Instead, they rely on the surrounding tissues and valves to help move lymph through the system
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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