The most important mechanism for capillary exchange is?.
Diffusion.
Filtration.
Gravity.
Colloid osmotic pressure.
The Correct Answer is A
Choice A rationale:
Diffusion is the primary mechanism for capillary exchange. It allows small molecules, such as gases, lipids, and lipid-soluble molecules, to move directly through the membranes of the endothelial cells of the capillary wall.
Choice B rationale:
Filtration is a pressure-driven mechanism that moves volumes of fluid from an area of higher pressure in a capillary bed to an area of lower pressure in the tissues. However, it is not the primary mechanism for capillary exchange.
Choice C rationale:
Gravity does not play a direct role in capillary exchange.
Choice D rationale:
Colloid osmotic pressure is a type of pressure that interacts with hydrostatic pressure to drive fluid movement in capillaries. However, it is not the primary mechanism for capillary exchange.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
The lymphatic system has many functions, including immunity, absorption of fats, and the maintenance of fluid balance. Choices B and C rationale: While the lymphatic system does play a role in immunity and maintaining fluid balance, these are not its only functions.
Choice D rationale:
The lymphatic system does not directly regulate electrolyte balance.
So, the correct answer is Choice A, after analyzing all choices.
Correct Answer is B
Explanation
Choice A rationale:
The arachnoid is not the innermost layer, it is in the middle. -
Choice B rationale:
The correct order of the meninges from inside to outside is Pia mater, arachnoid, and dura mater. -
Choice C rationale:
The dura mater is not the innermost layer, it is the outermost layer. -
Choice D rationale:
Gray matter is not a layer of the meninges.
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