How does the body respond to low blood pressure in terms of renal function?
Practice Questions
Q1
How does the body respond to low blood pressure in terms of renal function?
Increases urine output
Decreases renin secretion
Increases renin secretion
Inhibits aldosterone release
Questions & Step-by-Step Solutions
How does the body respond to low blood pressure in terms of renal function?
Step 1: The body detects low blood pressure through sensors in the blood vessels.
Step 2: The kidneys respond by releasing a hormone called renin into the bloodstream.
Step 3: Renin activates a process called the renin-angiotensin-aldosterone system (RAAS).
Step 4: This process leads to the production of angiotensin II, which causes blood vessels to narrow (constrict).
Step 5: Angiotensin II also stimulates the adrenal glands to release another hormone called aldosterone.
Step 6: Aldosterone helps the kidneys retain more sodium and water, which increases blood volume.
Step 7: As blood volume increases, blood pressure rises back to normal levels.
Renin-Angiotensin-Aldosterone System (RAAS) – The physiological mechanism that regulates blood pressure and fluid balance through the secretion of renin, leading to the production of angiotensin II and aldosterone.
Kidney Function in Blood Pressure Regulation – The role of the kidneys in maintaining blood pressure through fluid retention and hormonal regulation.
