If blood pressure drops very low (MAP is below 80mmHg) renin enzyme will be secreted by granular cells. Which of the following is NOT likely to occur?
Glomerular filtration rate (GFR) will decrease.
Net filtration pressure (NFP) will decrease.
Blood plasma and extracellular fluids volume will increase.
Kidney perfusion will increase.
The Correct Answer is D
A. Glomerular filtration rate (GFR) will decrease: Low MAP leads to reduced renal perfusion, and until compensatory mechanisms restore pressure, GFR will drop.
B. Net filtration pressure (NFP) will decrease: Low systemic pressure leads to low glomerular hydrostatic pressure, resulting in lower NFP.
C. Blood plasma and extracellular fluids volume will increase: The RAAS pathway, triggered by renin, leads to aldosterone and ADH release, promoting sodium and water retention, thereby increasing fluid volume.
D. Kidney perfusion will increase: Perfusion decreases when MAP is below 80 mmHg, and renin is released because of reduced perfusion, not increased.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Cooling of the mouth: This causes temporary inhibition of thirst but does not last long-term.
B. Distension of the stomach by ingested water: Stomach distension contributes to short-term thirst relief.
C. A drop in blood osmolarity: This indicates proper hydration and is the main signal for the hypothalamus to turn off the thirst mechanism.
D. Moistening of the mouth: Like cooling, moistening the mouth only provides short-term relief from thirst.
E. Increased salivation: Increased salivation can be a result of hydration but does not directly regulate thirst.
Correct Answer is {"dropdown-group-1":"B"}
Explanation
A. External urethral orifice: This is the external opening of the urethra, and part of the urethral passageway.
B. Internal urethral sphincter: This is a muscular structure that regulates flow, but it is not a section of the urethral tube itself.
C. Prostatic urethra: This is the part of the male urethra that passes through the prostate gland.
D. Membranous urethra: This portion passes through the urogenital diaphragm in males.
E. Spongy urethra: The longest segment of the male urethra, it runs through the penile (spongy) tissue.
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