BIOL 431 Unit 4 Sample Exam
Questions with Complete Answers
Which of the following molecules is easily filtered in the kidneys and is normally
completely reabsorbed in the tubules of the nephron and is usually not detected in
the urine - ANSWER-glucose
The function of the portion of the nephron labeled "R" is primarily (descending limb) -
ANSWER-Water reabsorption
Textbooks suggests that about 70% of filtered substances (Including water, ions, and
nutrients) in the kidneys are automatically reabsorbed in the... - ANSWER-proximal
convoluted tubules
The transport of molecules from the vasa recta capillaries into the filtrate within the
nephron's lumen is called... - ANSWER-reabsorption
PTH circulating in the plasma targets cells of the nephron to increase which of the
following? - ANSWER-Calcium channels in the luminal membrane of the DCT and
CD cells
Which of the following lab results would be consistent with a patient suffering from
kidney failure? - ANSWER-Decreased GFR; Increased plasma creatinine; Increased
blood urea
If you are asked to consume 1 liter of water very quickly at the start of class, which
mechanism would explain your increased urine production in about 60 minutes after
drinking - ANSWER-Decreased antidiuretic hormone secretion and actions
Which of the following treatments would be predicted to lower blood pressure? -
ANSWER-Angiotensin converting enzyme inhibitor
Which of the following responses will help to improve your blood pressure despite
you bleeding from a shark bite? - ANSWER-Increased renin release from the
kidneys (increase blood pressure)
the hormone aldosterone is secreted from.... and helps to .... - ANSWER-Adrenal
gland; Increase Na+ reabsorption
the conversion of a protein in the plasma to angiotensin I is performed by.... while the
conversion of angiotensin I to II is performed by.... - ANSWER-Renin; ACE
Sitting in water at shoulder level for 30 minutes and have to pee. This physiological
response causing increased urine formation by the kidneys is most likely due to... -
ANSWER-Increased atrial natriuretic peptide levels
Questions with Complete Answers
Which of the following molecules is easily filtered in the kidneys and is normally
completely reabsorbed in the tubules of the nephron and is usually not detected in
the urine - ANSWER-glucose
The function of the portion of the nephron labeled "R" is primarily (descending limb) -
ANSWER-Water reabsorption
Textbooks suggests that about 70% of filtered substances (Including water, ions, and
nutrients) in the kidneys are automatically reabsorbed in the... - ANSWER-proximal
convoluted tubules
The transport of molecules from the vasa recta capillaries into the filtrate within the
nephron's lumen is called... - ANSWER-reabsorption
PTH circulating in the plasma targets cells of the nephron to increase which of the
following? - ANSWER-Calcium channels in the luminal membrane of the DCT and
CD cells
Which of the following lab results would be consistent with a patient suffering from
kidney failure? - ANSWER-Decreased GFR; Increased plasma creatinine; Increased
blood urea
If you are asked to consume 1 liter of water very quickly at the start of class, which
mechanism would explain your increased urine production in about 60 minutes after
drinking - ANSWER-Decreased antidiuretic hormone secretion and actions
Which of the following treatments would be predicted to lower blood pressure? -
ANSWER-Angiotensin converting enzyme inhibitor
Which of the following responses will help to improve your blood pressure despite
you bleeding from a shark bite? - ANSWER-Increased renin release from the
kidneys (increase blood pressure)
the hormone aldosterone is secreted from.... and helps to .... - ANSWER-Adrenal
gland; Increase Na+ reabsorption
the conversion of a protein in the plasma to angiotensin I is performed by.... while the
conversion of angiotensin I to II is performed by.... - ANSWER-Renin; ACE
Sitting in water at shoulder level for 30 minutes and have to pee. This physiological
response causing increased urine formation by the kidneys is most likely due to... -
ANSWER-Increased atrial natriuretic peptide levels
