$$\text{NFP} = \text{GHP} - (\text{CHP} + \text{GCOP})$$

Question 1

Which of the following is NOT a function of the kidneys?

Accepted Answer

Production of digestive enzymes

Question 2

The kidneys are retroperitoneal organs. What does 'retroperitoneal' mean?

Accepted Answer

Located behind the peritoneal cavity

Question 3

Which structure is the entry and exit point for blood vessels, lymphatics, and nerves in the kidney?

Accepted Answer

Renal hilum

Question 4

Trace the correct path of urine drainage from the nephron to the ureter.

Accepted Answer

Papillary duct → Minor calyx → Major calyx → Renal pelvis → Ureter

Question 5

Which of the following statements about nephrons is TRUE?

Accepted Answer

Juxtamedullary nephrons have long nephron loops

Question 6

Which equation correctly represents net filtration pressure (NFP) in the glomerulus?

Accepted Answer

$$	ext{NFP} = 	ext{GHP} - (	ext{CHP} + 	ext{GCOP})$$

Question 7

A patient has a GFR of 80 ml/min. Which of the following could explain this decrease?

Accepted Answer

Decreased glomerular capillary surface area

Question 8

Which of the following is a barrier in the filtration membrane of the renal corpuscle?

Accepted Answer

Glomerular basement membrane

Question 9

Which process in the nephron is responsible for removing additional waste products from the blood into the filtrate?

Accepted Answer

Secretion

Question 10

Which segment of the nephron is MOST active in reabsorption and secretion?

Accepted Answer

Proximal tubule

Question 11

Which of the following is TRUE regarding water reabsorption in the nephron loop?

Accepted Answer

Water is reabsorbed in the descending limb, but not in the ascending limb

Question 12

Which hormone increases water reabsorption by increasing the permeability of the collecting duct?

Accepted Answer

Antidiuretic hormone (ADH)

Question 13

A patient is producing very dilute urine. Which of the following is most likely TRUE?

Accepted Answer

More solutes are reabsorbed than water

Question 14

Which mechanism is responsible for creating the medullary osmotic gradient necessary for concentrated urine?

Accepted Answer

Countercurrent multiplier

Question 15

Which equation would you use to calculate renal clearance ($$C) of a $$substance?

Accepted Answer

$$C = \frac{U 	imes V}{P}$$

Question 16

Which of the following is TRUE about the anatomy of the urinary bladder?

Accepted Answer

It is posterior to the pubic symphysis

Question 17

During the micturition reflex, which muscle contracts and which sphincter relaxes involuntarily?

Accepted Answer

Detrusor muscle contracts; internal urethral sphincter relaxes

Question 18

Which of the following best describes the difference between the male and female urethra?

Accepted Answer

The female urethra is shorter and only serves as a urinary duct

Question 19

Which of the following is a plausible consequence of impaired tubular secretion in the nephron?

Accepted Answer

Accumulation of metabolic wastes such as urea and ammonia in the blood

Urinary System: Anatomy and Physiology Study Guide

Study Guide - Practice Questions