BLD 402 EXAM 1 QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS GRADED A++ LATEST UPDATE
what is renin released from?
kidney
what does renin do?
Converts angiotensinogen to angiotensin I
when is renin released?
Decreased renal perfusion pressure, decreased plasma sodium, sympathetic nerve
stimulation
what does the hypothalamus sense?
angiotensin II, increased extracellular osmolarity, decreased blood volume or blood
pressure
what does the hypothalamus do?
Increases thirst signal, secretes ADH which increases water reabsorption
what does angiotensin converting enzyme do?
Converts angiotensin I to angiotensin II
what does angiotensin II do?
Constricts blood vessels, triggers aldosterone release, stimulates hypothalamus,
increases Na+ reabsorption which retains body water
what does aldosterone do?
, Increased retention of Na+ and increased excretion of K+
Increases water reabsorption in kidney
What do natiuretic peptides do?
Relaxes blood vessels by suppressing sympathetic nerve activity
Increases vascular permeability
Increase glomerular filtration rate
Suppression of RAA system
Increased NA+ excretion
Inhibits salt appetite
Decreases water intake
Inhibits secretion and activity of ADH
Regulation: released in response to increased blood volume
where is atrial natiuretic peptide found?
cardiac atria
where is beta natiuretic peptide found?
left ventricle
what does beta natriuretic peptide indicate?
Indicates congestive heart failure progression
where is C-type natriuretic peptide found?
many types of tissues
where is body water found?
Intracellular water: 40%
Extracellular water: 20%
COMPLETE SOLUTIONS GRADED A++ LATEST UPDATE
what is renin released from?
kidney
what does renin do?
Converts angiotensinogen to angiotensin I
when is renin released?
Decreased renal perfusion pressure, decreased plasma sodium, sympathetic nerve
stimulation
what does the hypothalamus sense?
angiotensin II, increased extracellular osmolarity, decreased blood volume or blood
pressure
what does the hypothalamus do?
Increases thirst signal, secretes ADH which increases water reabsorption
what does angiotensin converting enzyme do?
Converts angiotensin I to angiotensin II
what does angiotensin II do?
Constricts blood vessels, triggers aldosterone release, stimulates hypothalamus,
increases Na+ reabsorption which retains body water
what does aldosterone do?
, Increased retention of Na+ and increased excretion of K+
Increases water reabsorption in kidney
What do natiuretic peptides do?
Relaxes blood vessels by suppressing sympathetic nerve activity
Increases vascular permeability
Increase glomerular filtration rate
Suppression of RAA system
Increased NA+ excretion
Inhibits salt appetite
Decreases water intake
Inhibits secretion and activity of ADH
Regulation: released in response to increased blood volume
where is atrial natiuretic peptide found?
cardiac atria
where is beta natiuretic peptide found?
left ventricle
what does beta natriuretic peptide indicate?
Indicates congestive heart failure progression
where is C-type natriuretic peptide found?
many types of tissues
where is body water found?
Intracellular water: 40%
Extracellular water: 20%
