HW 10 Renal

Question 1

Which answer has the correct orders of blood pressures in each of the renal vessels from highest to lowest?

Answer 1

renal artery > interlobar arteries > afferent arterioles > glomerular capillaries > efferent arterioles > peritubular capillaries > interlobular veins > renal vein

Question 2

Which choice best describes the pathway that the ultrafiltrate/urine follows to be excreted?

Answer 2

glomerular capsule - nephron - renal pelvis - ureter - bladder - urethra

Question 3

The majority of water and sodium reabsorbed is in the

Answer 3

proximal convoluted tubule

Question 4

Which of the following statements is TRUE?

Answer 4

water reabsorption from the collecting duct is regulated by ADH effects

Question 5

In a normal person in a dehydrated state, the tonicity within each of these compartments is related in the following manner:

Answer 5

loop of Henle > glomerular capillary = glomerular capsule = proximal tubule > distal convoluted tubule < collecting duct

Question 6

If a substance has a molecular weight greater than 10,000 Daltons and it appears in the urine, one can conclude that this substance is

Answer 6

not filtered but is secreted

Question 7

As blood flows through the glomerular capillaries, the oncotic pressure increases. As blood flows through the peritubular capillaries, the oncotic pressure

Answer 7

increases, decreases

Question 8

The glomerular filtration rate is increased by

Answer 8

dilation of the afferent arteriole and constriction of the efferent arterioles

Question 9

Which of the follow is TRUE of the loop of Henle?

Answer 9

• The ascending limb in impermeable to water
• The ascending limb reabsorbs NaCl
• The desending limb is permeable to water and the descending limb is impermeable to NaCl

Question 10

The enzyme that is associated with renal function and control of water and salt balance is

Answer 10

renin