The renin-angiotensin-aldosterone system (RAAS) plays a crucial role in blood pressure regulation. What is the primary function of angiotensin II in this system? (a) To relax blood vessel smooth muscle, leading to vasodilation and decreased blood pressure. (b) To stimulate the release of aldosterone from the adrenal cortex, promoting sodium reabsorption and increased blood volume. (c) To inhibit the release of renin from the juxtaglomerular apparatus in the kidney. (d) To directly constrict blood vessels, causing an increase in blood pressure.
Added by Brett M.
Step 1
The RAAS is a hormone system that helps regulate long-term blood pressure and fluid balance in the body. Show more…
Show all steps
Your feedback will help us improve your experience
Bryan Lynn and 66 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
How does the renin-angiotensin-aldosterone mechanism function? a. Renin, which is secreted by part of the juxtaglomerular complex, acts on angiotensin to form angiotensin I, which is then converted to angiotensin II by ACE. Angiotensin II then stimulates the release of aldosterone and ADH. Angiotensin II acts to destabilize blood pressure and volume. b. Renin, which is secreted by part of the juxtaglomerular complex, acts on angiotensin to form angiotensin II, which is then converted to angiotensin I by ACE. Angiotensin II then stimulates the release of aldosterone and ADH. Angiotensin II acts to stabilize blood pressure and volume. c. Renin, which is secreted by part of the juxtaglomerular complex, acts on angiotensin to form angiotensin I, which is then converted to angiotensin II and ADH by ACE. ADH then stimulates the release of aldosterone. Angiotensin II acts to stabilize blood pressure and volume. d. Renin, which is secreted by part of the juxtaglomerular complex, acts on angiotensin to form angiotensin I, which is then converted to angiotensin II by ACE. Angiotensin II then stimulates the release of aldosterone and ADH. Angiotensin II acts to stabilize blood pressure and volume.
Adi S.
The kidneys are controlled by hormones from the brain, liver, and other locations. However, the kidneys also produce the hormone renin in their juxtaglomerular complex. How would damage to the juxtaglomerular complex affect the renin-angiotensin-aldosterone system? a. Aldosterone will not be produced, decreasing blood volume b. Angiotensin I will not be produced, decreasing blood pressure c. Angiotensin-converting enzyme will not be produced, increasing sodium reabsorption. d. Angiotensin II will not be produced, increasing the glomerular filtration rate.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD