Renin Angiotensin Aldosterone System Basics

What is the primary function of the renin-angiotensin-aldosterone system?

• Control muscle contraction and relaxation.

• Regulate heart rate and respiratory function.

• Regulate blood pressure and fluid balance.

• Maintain body temperature and pH balance.

Tags

NGSS.HS-LS1-3

Which organ releases renin to initiate the renin-angiotensin-aldosterone system?

• Liver

• Stomach

• Pancreas

• Kidneys

Tags

NGSS.HS-LS1-3

What is the precursor molecule for angiotensin I?

• Angiotensinogen

• Angiotensin III

• Angiotensinase II

• Angiotensinase

Which enzyme converts angiotensin I to angiotensin II?

• aldosterone

• angiotensin-converting enzyme (ACE)

• renin

• angiotensinase

What is the primary action of angiotensin II?

• Constrict blood vessels

• Increase heart rate

• Promote blood clotting

• Dilate blood vessels

Tags

NGSS.HS-LS1-3

Which receptor does angiotensin II bind to?

• AT1 receptor

• AT2 receptor

• AT3 receptor

• AT4 receptor

What is the primary function of aldosterone?

• Stimulate muscle growth

• Control heart rate

• Regulate blood sugar levels

• Regulate salt and water balance in the body

Tags

NGSS.HS-LS1-3

Which organ releases aldosterone?

• Adrenal gland

• Pancreas

• Kidney

• Liver

Tags

NGSS.HS-LS1-3

What is the primary stimulus for aldosterone release?

• Atrial natriuretic peptide (ANP)

• Renin-angiotensin-aldosterone system (RAAS)

• Thyroid-stimulating hormone (TSH)

• Antidiuretic hormone (ADH)

What is the primary target organ of aldosterone?

• lungs

• liver

• kidneys

• heart