Multiple Choice
What is the effect of increased hydrostatic pressure of blood on glomerular filtration rate (GFR)?
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25. The Urinary System
Renal Physiology: Regulation of Glomerular Filtration
Multiple Choice
Which of the following stimulates the release of renin?
A
Decreased sympathetic nervous activity
B
Increased blood volume
C
High blood sodium levels
D
Low blood pressure
Verified step by step guidance1
Understand the role of renin: Renin is an enzyme secreted by the kidneys that plays a crucial role in the regulation of blood pressure, electrolyte balance, and fluid balance.
Identify the triggers for renin release: Renin is typically released in response to low blood pressure, low sodium levels, or sympathetic nervous system activation.
Analyze the options given: Consider how each option affects blood pressure or the conditions that stimulate renin release.
Evaluate 'Decreased sympathetic nervous activity': This would likely reduce renin release, as sympathetic activity usually stimulates it.
Evaluate 'Low blood pressure': Low blood pressure is a direct stimulus for renin release, as the body attempts to increase blood pressure through the renin-angiotensin-aldosterone system.
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