What material is found in the hollow spaces of long bones?
Marrow
Natural killer cells
Enzymes
Plasma cells
The Correct Answer is A
A. Marrow: The hollow spaces within long bones contain bone marrow, which is responsible for the production of blood cells.
B. Natural killer cells: Natural killer cells are a type of lymphocyte found in the bloodstream and tissues but not directly within the hollow spaces of bones.
C. Enzymes: Enzymes are not found specifically in the hollow spaces of long bones; they are present throughout the body and are involved in metabolic processes.
D. Plasma cells: Plasma cells are derived from B cells and are primarily located in lymphatic tissue and bone marrow but do not fill the hollow spaces of long bones.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Subclavian duct: There is no specific "subclavian duct" for lymph drainage; lymphatic fluid drains into the subclavian veins.
B. Thoracic duct: The thoracic duct drains lymph from the lower limbs and the left side of the body, returning it to the circulatory system at the junction of the left subclavian and internal jugular veins.
C. Left lymphatic duct: The thoracic duct is often referred to as the left lymphatic duct but is not limited to just left drainage.
D. Right lymphatic duct: The right lymphatic duct drains lymph from the right upper quadrant of the body but does not drain lymph from the lower limbs.
Correct Answer is D
Explanation
A. Fully mature and leave the epididymis: The acrosome does not play a role in sperm maturation or their release from the epididymis.
B. Travel through the male reproductive ducts: Movement through the reproductive ducts relies on the sperm's flagellum and muscle contractions, not the acrosome.
C. Develop a full set of chromosomes: Chromosome development occurs during spermatogenesis and is unrelated to the acrosome.
D. Breach and fertilize the ovum: The acrosome contains enzymes that allow the sperm to penetrate the ovum during fertilization. Without an acrosome, the sperm would be unable to breach the egg’s outer layer.
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