PNB 2275 Exam 4 Questions and Answers| New Update with 100% Correct Answers
Which of the following is NOT true about angiotensin II? activates parasympathetic output
It does:
stimulates thirst
elevates blood pressure
is a potent vasoconstrictor
increases cardiac output
All of these statements are true Macula densa cells found in the distal tubule sense changes
in filtrate osmolarity.
Granular cells, specialized smooth muscle cells, is part of the juxtaglomerular apparatus.
Juxtaglomerular apparatus is important in regulating GFR.
Adenosine is released from macula densa cells to constrict afferent arteriole when GFR is
increased.
Answers:
Macula densa cells found in the distal tubule sense changes in filtrate osmolarity.
Granular cells, specialized smooth muscle cells, is part of the juxtaglomerular apparatus.
Juxtaglomerular apparatus is important in regulating GFR.
Adenosine is released from macula densa cells to constrict afferent arteriole when GFR is
increased.
, Consider the myogenic mechanism for autoregulation of glomerular filtration rate. If renal
blood pressure rises The afferent arteriole will constrict in response
Which of the following statements concerning the hormone atrial natriuretic peptide is FALSE
ANP increases aldosterone secretion
True:
ANP reduces the sensation of thirst.
ANP promotes sodium loss at the kidneys.
ANP is produced by cells in the heart.
ANP suppresses ADH secretion.
Which of the following would cause an increase in net filtration pressure Increase in
glomerular blood pressure.
Would NOT:
Increase in fluid pressure in Bowmanâ s capsule.
Increase in blood osmotic pressure.
An increase in the medullary osmotic gradient.
Constriction of afferent arteriole.
Normally, the clearance for glucose is close to zero
GFR is 115 mL/min, Tm for glucose is 287.5 mg/min. Plasma glucose concentration is 1 mg/mL.
What is the renal threshold for glucose? 2.5 mg/mL
Which of the following is NOT true about angiotensin II? activates parasympathetic output
It does:
stimulates thirst
elevates blood pressure
is a potent vasoconstrictor
increases cardiac output
All of these statements are true Macula densa cells found in the distal tubule sense changes
in filtrate osmolarity.
Granular cells, specialized smooth muscle cells, is part of the juxtaglomerular apparatus.
Juxtaglomerular apparatus is important in regulating GFR.
Adenosine is released from macula densa cells to constrict afferent arteriole when GFR is
increased.
Answers:
Macula densa cells found in the distal tubule sense changes in filtrate osmolarity.
Granular cells, specialized smooth muscle cells, is part of the juxtaglomerular apparatus.
Juxtaglomerular apparatus is important in regulating GFR.
Adenosine is released from macula densa cells to constrict afferent arteriole when GFR is
increased.
, Consider the myogenic mechanism for autoregulation of glomerular filtration rate. If renal
blood pressure rises The afferent arteriole will constrict in response
Which of the following statements concerning the hormone atrial natriuretic peptide is FALSE
ANP increases aldosterone secretion
True:
ANP reduces the sensation of thirst.
ANP promotes sodium loss at the kidneys.
ANP is produced by cells in the heart.
ANP suppresses ADH secretion.
Which of the following would cause an increase in net filtration pressure Increase in
glomerular blood pressure.
Would NOT:
Increase in fluid pressure in Bowmanâ s capsule.
Increase in blood osmotic pressure.
An increase in the medullary osmotic gradient.
Constriction of afferent arteriole.
Normally, the clearance for glucose is close to zero
GFR is 115 mL/min, Tm for glucose is 287.5 mg/min. Plasma glucose concentration is 1 mg/mL.
What is the renal threshold for glucose? 2.5 mg/mL
