Question 1

Which of the following correctly lists the order of organs involved in the formation and elimination of urine?

Accepted Answer

Kidney $$\rightarrow$$ Ureter $$\rightarrow$$ Bladder $$\rightarrow$$ Urethra

Question 2

A patient has a blockage in the renal corpuscle. Which structures are directly affected?

Accepted Answer

Glomerulus and Bowman's capsule

Question 3

Why do the kidneys secrete erythropoietin?

Accepted Answer

To stimulate red blood cell production in response to low oxygen levels

Question 4

Which of the following best describes juxtamedullary nephrons?

Accepted Answer

Nephrons with long loops of Henle that extend deep into the medulla

Question 5

What is the primary function of tubular secretion in the nephron?

Accepted Answer

To move substances from the blood into the tubular fluid

Question 6

Which unit of measurement is commonly used for glomerular filtration rate (GFR)?

Accepted Answer

$$\mathrm{mL/min}$$

Question 7

If large molecules become trapped in the basement membrane of the glomerulus, which cells are responsible for engulfing them?

Accepted Answer

Mesangial cells

Question 8

A patient is experiencing water intoxication. What is the most likely consequence?

Accepted Answer

Cellular swelling due to hypotonic extracellular fluid

Question 9

Which of the following is an example of extracellular fluid?

Accepted Answer

Plasma

Question 10

Which ion is the main solute of the extracellular fluid?

Accepted Answer

Sodium ($$\mathrm{Na^+})$$

Question 11

What is the typical pH range of normal urine?

Accepted Answer

4.5 to 8.0

Question 12

Which of the following best describes micturition?

Accepted Answer

The process of expelling urine from the bladder

Question 13

Which of the following conditions would most likely cause volume depletion?

Accepted Answer

Severe hemorrhage

Question 14

What is the most common acid-base imbalance in the human body?

Accepted Answer

Respiratory acidosis

Question 15

During hyperventilation, what happens to blood pH and why?

Accepted Answer

Blood pH increases due to decreased $$\mathrm{CO_2$}$$

Question 16

Which of the following best describes the role of bicarbonate ions ($$\mathrm{$$HCO_3$$^-}) in $$the body?

Accepted Answer

They buffer excess hydrogen ions to help maintain blood pH

Question 17

If bicarbonate levels in the blood drop significantly, what is the most likely effect?

Accepted Answer

Blood pH will decrease, leading to acidosis

Question 18

Which hormone is released in response to low blood pressure and triggers the release of aldosterone?

Accepted Answer

Angiotensin II

Question 19

A patient with chronic obstructive pulmonary disease (COPD) is likely to develop which acid-base imbalance?

Accepted Answer

Respiratory acidosis

Question 20

Which of the following best explains why the kidneys' response to acid-base imbalance is considered powerful but slow?

Accepted Answer

They can excrete or reabsorb large amounts of acid or base, but the process takes hours to days

Renal Physiology, Fluid & Electrolyte Balance, and Acid-Base Homeostasis Study Guide

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