Question

when monocytes move from the systemic circulatory system into general connective tissues, what are they called?

a. macrophage
b. leukocyte
c. basophil
d. thrombocyte

Explanation:

Analyze the question stem

The question asks for the name of monocytes once they leave the systemic circulatory system and enter general connective tissues.

Evaluate the options

• a. Macrophage: Monocytes are circulating white blood cells. When they migrate from the bloodstream into tissues, they differentiate into macrophages (or dendritic cells) to perform phagocytosis.
• b. Leukocyte: This is a general term for all white blood cells, including monocytes, lymphocytes, granulocytes, etc. It is not the specific term for migrated monocytes.
• c. Basophil: This is a specific type of granulocytic white blood cell involved in inflammatory and allergic reactions, not a differentiated monocyte.
• d. Thrombocyte: This is another term for a platelet, which is involved in blood clotting, not a white blood cell.

Determine the correct answer

Based on physiological definitions, monocytes that migrate into connective tissues differentiate into macrophages.

Answer:

• a. Macrophage (Correct answer)
• b. Leukocyte
• c. Basophil
• d. Thrombocyte