Bio 141 Exam 4 Pre-week, WS wrap up, Clicker || 100%
Faultless Answers.
Renal artery correct answers Vessel bringing blood to kidney
Filtrate correct answers Fluid produced in kidney from filtering our blood
Renal vein correct answers vessel taking blood away from the kidney
Nephron correct answers functional unit of the kidney
Cortex correct answers outside area of the kidney
Medulla correct answers inside region of the kidney
Ureter correct answers tube for urine exiting the kidney
Hillium correct answers entry point for the artery, vein, and ureter in the kidney
Renal calyx correct answers the first structure that collects urine
A correct answers About 20% of blood is constantly being filtered by your kidneys
A. True
B. False
A correct answers Reabsorption is the movement of solutes out of the tubules, through the
interstitial fluid and into the capillaries.
A. True
B. False
A correct answers Secretion is the movement of solutes out of the capillaries, through the
interstitial fluid and into the nephron.
A. True
B. False
B, F correct answers Which of the following substances do NOT enter the glomerular capsule
(Bowman's capsule) from the glomerulus during initial filtration? Choose all that apply.
A. Water
B. Blood cells
C. NaCl
D. Glucose
E. Individual amino acids
F. Proteins
A correct answers Creatinine and urea are described as _________________ in the initial filtrate.
A. wastes
, B. nutrients
B correct answers The presence of ADH (anti diuretic hormone) helps the collecting duct
_________________ water.
A.secrete
B. reabsorb
B correct answers The descending limb of the nephron loop (Loop of Henle) is impermeable to
water and the ascending limb is impermeable to ions.
A. True
B. False
A correct answers Reabsorption of water from the descending limb is a form of
__________________ transport.
A. passive
B. active
B correct answers The osmolarity of the interstitial fluid of the medulla is the most concentrated
____________.
A. near the cortex
B. deeper in the medulla
C. at the start of the medulla
D. There is no difference in concentration.
B correct answers The osmolarity of filtrate is most concentrated _________________.
A. when entering the nephron loop
B. at the bottom of the nephron loop
C. when exiting the loop and entering the distal convoluted tubule
A correct answers If the nephron loop in a different organism (like a kangaroo rat from the
desert) was LONGER than the human nephron loop, the maximum medullary interstitial
osmolarity would be ____________ compared to 1200 mOsm/L.
A. greater than
B. less than
C. equal to
D correct answers Why is there a concentration gradient of NaCl in the medulla?
A. There is more NaCl as the filtrate leaves then ascending limb compared to when it enters the
ascending limb.
B. Passive transport in the ascending limb helps to establish an ion gradient.
C. The water in the medulla dilutes the NaCl to help contribute to the gradient.
D. There is more NaCl at the start of the ascending limb that decreases as the filtrate moves up
the limb.
C correct answers As filtrate moves through the descending limb of the nephron loop, the total
amount of NaCl _____________.
Faultless Answers.
Renal artery correct answers Vessel bringing blood to kidney
Filtrate correct answers Fluid produced in kidney from filtering our blood
Renal vein correct answers vessel taking blood away from the kidney
Nephron correct answers functional unit of the kidney
Cortex correct answers outside area of the kidney
Medulla correct answers inside region of the kidney
Ureter correct answers tube for urine exiting the kidney
Hillium correct answers entry point for the artery, vein, and ureter in the kidney
Renal calyx correct answers the first structure that collects urine
A correct answers About 20% of blood is constantly being filtered by your kidneys
A. True
B. False
A correct answers Reabsorption is the movement of solutes out of the tubules, through the
interstitial fluid and into the capillaries.
A. True
B. False
A correct answers Secretion is the movement of solutes out of the capillaries, through the
interstitial fluid and into the nephron.
A. True
B. False
B, F correct answers Which of the following substances do NOT enter the glomerular capsule
(Bowman's capsule) from the glomerulus during initial filtration? Choose all that apply.
A. Water
B. Blood cells
C. NaCl
D. Glucose
E. Individual amino acids
F. Proteins
A correct answers Creatinine and urea are described as _________________ in the initial filtrate.
A. wastes
, B. nutrients
B correct answers The presence of ADH (anti diuretic hormone) helps the collecting duct
_________________ water.
A.secrete
B. reabsorb
B correct answers The descending limb of the nephron loop (Loop of Henle) is impermeable to
water and the ascending limb is impermeable to ions.
A. True
B. False
A correct answers Reabsorption of water from the descending limb is a form of
__________________ transport.
A. passive
B. active
B correct answers The osmolarity of the interstitial fluid of the medulla is the most concentrated
____________.
A. near the cortex
B. deeper in the medulla
C. at the start of the medulla
D. There is no difference in concentration.
B correct answers The osmolarity of filtrate is most concentrated _________________.
A. when entering the nephron loop
B. at the bottom of the nephron loop
C. when exiting the loop and entering the distal convoluted tubule
A correct answers If the nephron loop in a different organism (like a kangaroo rat from the
desert) was LONGER than the human nephron loop, the maximum medullary interstitial
osmolarity would be ____________ compared to 1200 mOsm/L.
A. greater than
B. less than
C. equal to
D correct answers Why is there a concentration gradient of NaCl in the medulla?
A. There is more NaCl as the filtrate leaves then ascending limb compared to when it enters the
ascending limb.
B. Passive transport in the ascending limb helps to establish an ion gradient.
C. The water in the medulla dilutes the NaCl to help contribute to the gradient.
D. There is more NaCl at the start of the ascending limb that decreases as the filtrate moves up
the limb.
C correct answers As filtrate moves through the descending limb of the nephron loop, the total
amount of NaCl _____________.
