Q: Which equation best represents the calculation of net filtration pressure (NFP) in the glomerulus?

NFP = $$ (\text{HP}_\text{g} - (\text{OP}_\text{g} + \text{HP}_\text{c})) $$

Q: Which equation best represents the relationship between urine concentration and specific gravity?

Specific gravity = $$ \frac{\text{Density of urine}}{\text{Density of water}} $$

Question 1

Which of the following is NOT a primary function of the urinary system?

Accepted Answer

Digestion of nutrients

Question 2

A patient presents with a blockage in the ureter. Which structure will urine accumulate in immediately before the blockage?

Accepted Answer

Renal pelvis

Question 3

Which vessel directly supplies blood to the glomerulus?

Accepted Answer

Afferent arteriole

Question 4

Which of the following best describes the difference between cortical and juxtamedullary nephrons?

Accepted Answer

Juxtamedullary nephrons have longer loops of Henle that extend deep into the medulla.

Question 5

During glomerular filtration, which of the following substances is LEAST likely to become part of the filtrate?

Accepted Answer

Plasma proteins

Question 6

Which equation best represents the calculation of net filtration pressure (NFP) in the glomerulus?

Accepted Answer

NFP = $$ (	ext{HP}_	ext{g} - (	ext{OP}_	ext{g} + 	ext{HP}_	ext{c})) $$

Question 7

Which hormone increases water reabsorption in the collecting ducts, leading to the formation of concentrated urine?

Accepted Answer

Antidiuretic hormone (ADH)

Question 8

A patient is given a loop diuretic. What is the most likely effect on their urine output and kidney function?

Accepted Answer

Increased urine output due to decreased sodium reabsorption in the loop of Henle

Question 9

Which of the following is a major component of the juxtaglomerular complex (JGC) and its function?

Accepted Answer

Granular cells, which secrete renin in response to low blood pressure

Question 10

Which process is responsible for the movement of substances from the peritubular capillaries into the nephron tubule?

Accepted Answer

Tubular secretion

Question 11

Which hormone is primarily responsible for increasing sodium reabsorption in the distal convoluted tubule?

Accepted Answer

Aldosterone

Question 12

A patient with uncontrolled diabetes mellitus is found to have glucose in their urine. Which segment of the nephron is most likely overwhelmed, leading to this finding?

Accepted Answer

Proximal convoluted tubule

Question 13

Which of the following best describes the countercurrent mechanism in the nephron?

Accepted Answer

It creates a gradient that allows for water reabsorption and concentration of urine.

Question 14

Which equation best represents the relationship between urine concentration and specific gravity?

Accepted Answer

Specific gravity = $$ \frac{	ext{Density of urine}}{	ext{Density of water}} $$

Question 15

Which of the following is the correct order of structures that urine passes through from the nephron to outside the body?

Accepted Answer

Collecting duct → renal pelvis → ureter → urinary bladder → urethra

Question 16

Which of the following is a typical value for the pH of normal urine?

Accepted Answer

pH 6.0

Question 17

A patient with kidney stones is most likely to experience which of the following symptoms?

Accepted Answer

Severe pain during urination

Question 18

Which of the following is the most abundant solute in urine?

Accepted Answer

Urea

Question 19

Which of the following best describes the role of the kidneys in acid-base balance?

Accepted Answer

They secrete hydrogen ions and reabsorb bicarbonate to regulate blood pH.

Question 20

During micturition, which muscle contracts to expel urine from the bladder?

Accepted Answer

Detrusor muscle

Step-by-Step Guidance for BIO 173 Anatomy and Physiology II: Urinary System Study Guide

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