BLD 402 EXAM 1 ACTUAL QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS GRADED A++
ANP
Natriuretic peptide found in cardiac atria
BNP
Natriuretic peptide originally isolated from animal brains, but in humans is found in the
left ventricle
C type
Natriuretic peptide that is found at a low level in many types of tissues
BNP
If _______ is elevated, it is an indication of congestive heart failure
Angiotensin II
A peptide hormone that stimulates constriction of precapillary arterioles and increases
reabsorption of NaCl and water by the proximal tubules of the kidney, increasing blood
pressure and volume... found in RAAS
Angiotensin I
An inactive precursor in the RAAS that is converted by an enzyme to yield its active
counterpart
ACE
Converts angiotensin I to angiotensin II
Renin
, Hormone protease secreted by the kidney... converts angiotensinogen to angiotensin I...
released when renal perfusion pressure is DECREASED, or if there is sympathetic
nerve stimulation (response to epinephrine)
Capillaries, lungs
ACE is released from ______ (especially in the ______)
Angiotensin II
Constricts blood vessels, triggers aldosterone release from adrenal cortex, thirst,
triggers ADH secretion, Na+ reabsorption increases in kidney (which allows for
increases H2O retention)
Constricts, aldosterone, thirst, ADH, Na+, kidneys
Angiotensin II:
- ________ blood vessels
- Triggers _______ release from adrenal cortex
- ________
- Triggers ________ secretion
- _______ reabsorption increase in the _______ (which allows for increases H2O
retention)
Retained, excreted
Aldosterone regulates Na+/K+ exchange, ensuring that Na+ is _______
(retained/excreted) and K+ is ________ (retained/excreted)
Na/K exchange and water absorption in the kidney
What are the actions of aldosterone?
Natriuretic peptides
WITH COMPLETE SOLUTIONS GRADED A++
ANP
Natriuretic peptide found in cardiac atria
BNP
Natriuretic peptide originally isolated from animal brains, but in humans is found in the
left ventricle
C type
Natriuretic peptide that is found at a low level in many types of tissues
BNP
If _______ is elevated, it is an indication of congestive heart failure
Angiotensin II
A peptide hormone that stimulates constriction of precapillary arterioles and increases
reabsorption of NaCl and water by the proximal tubules of the kidney, increasing blood
pressure and volume... found in RAAS
Angiotensin I
An inactive precursor in the RAAS that is converted by an enzyme to yield its active
counterpart
ACE
Converts angiotensin I to angiotensin II
Renin
, Hormone protease secreted by the kidney... converts angiotensinogen to angiotensin I...
released when renal perfusion pressure is DECREASED, or if there is sympathetic
nerve stimulation (response to epinephrine)
Capillaries, lungs
ACE is released from ______ (especially in the ______)
Angiotensin II
Constricts blood vessels, triggers aldosterone release from adrenal cortex, thirst,
triggers ADH secretion, Na+ reabsorption increases in kidney (which allows for
increases H2O retention)
Constricts, aldosterone, thirst, ADH, Na+, kidneys
Angiotensin II:
- ________ blood vessels
- Triggers _______ release from adrenal cortex
- ________
- Triggers ________ secretion
- _______ reabsorption increase in the _______ (which allows for increases H2O
retention)
Retained, excreted
Aldosterone regulates Na+/K+ exchange, ensuring that Na+ is _______
(retained/excreted) and K+ is ________ (retained/excreted)
Na/K exchange and water absorption in the kidney
What are the actions of aldosterone?
Natriuretic peptides
