Unlike blood capillaries, lymphatic capillaries:
Do not contain any cells
Are blind-ended
Are virtually impermeable to water and solutes
Contain a thin muscular layer.
The Correct Answer is B
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
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Chyle drainage is not a function of the spleen. Chyle, a milky fluid rich in fats absorbed from the intestines, is transported by the lymphatic system — specifically through structures like lacteals and the thoracic duct — not the spleen.
B. Blood filtration is a key function of the spleen, as it removes pathogens and debris from the blood.
C. Destruction of old red blood cells occurs in the spleen, which acts as a graveyard for aging or damaged red blood cells.
D. Blood storage is also a spleen function; it can store blood and release it in case of hemorrhage or increased demand.
Correct Answer is A
Explanation
A. Red blood cells are not typically found in lymph. Lymph is a clear fluid that circulates through the lymphatic system and normally does not contain red blood cells unless there is damage or leakage from blood vessels.
B. Proteins can be present in lymph, especially smaller ones that pass through capillary walls.
C. Water is a major component of lymph, making up the fluid part that helps transport cells and substances.
D. Lymphocytes are a key component of lymph, playing a central role in the immune response.
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