Lymphatic vessels recover about. __________ of the fluid filtered by capillaries.
5%
85%
25%
50%
The Correct Answer is B
A. 5%: This percentage is far too low to represent the volume of fluid returned by the lymphatic system. Only a small portion of capillary filtrate would be recovered at this rate, which would lead to significant interstitial fluid accumulation.
B. 85%: Approximately 85% of filtered fluid is reabsorbed directly at the venous end of capillaries, while the remaining 15% enters lymphatic vessels. The lymphatic system consistently retrieves this portion to prevent edema and maintain fluid balance.
C. 25%: A recovery of 25% would greatly overestimate the lymphatic contribution compared with the actual capillary reabsorption dynamics. This value does not match known physiological distribution of fluid return pathways.
D. 50%: If lymphatics recovered half of the capillary filtrate, the role of venous reabsorption would be significantly reduced, which does not reflect actual fluid handling. This percentage does not align with established cardiovascular–lymphatic physiology.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["prolactin"]
Explanation
The image illustrates the hypothalamic-pituitary-endocrine organ axis. Letter Apoints to the mammary gland (breast tissue), which is the target organ for milk production. The hormone at A is Prolactin (PRL). The hormone pathway originates from the pituitary gland. The line labeled Apoints directly to the mammary gland. The hormone responsible for stimulating milk production in the mammary glands is Prolactin (PRL), which is secreted by the anterior pituitary gland.
Correct Answer is A
Explanation
A. Systolic pressure:The top number in a blood pressure reading represents systolic pressure. It reflects the maximum arterial pressure during ventricular contraction and indicates how forcefully the heart pumps blood into the arteries.
B. Pulse pressure:Pulse pressure is the difference between systolic and diastolic pressures. It is calculated from both numbers, not represented solely by the top number.
C. Mean arterial pressure:Mean arterial pressure (MAP) is the average arterial pressure during a cardiac cycle, calculated using both systolic and diastolic values. It is not indicated by the top number alone.
D. Diastolic pressure:Diastolic pressure is the bottom number in a blood pressure reading. It reflects the arterial pressure when the heart is relaxed, not the top number.
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