Q: Which of the following equations correctly represents the calculation of cardiac output?

$$Cardiac\ Output = Stroke\ Volume \times Heart\ Rate$$

Question 1

Which of the following best describes the primary focus of the Human Physiology Laboratory (PHY202L) course as outlined in the syllabus?

Accepted Answer

To develop an understanding of physiological processes and their application to clinical scenarios.

Question 2

A patient presents with symptoms of dehydration. Which physiological process is most directly responsible for maintaining fluid balance in the human body?

Accepted Answer

The process of osmosis across cell membranes.

Question 3

Which of the following equations correctly represents the calculation of cardiac output?

Accepted Answer

$$Cardiac\ Output = Stroke\ Volume 	imes Heart\ Rate$$

Question 4

A student is asked to explain the role of the autonomic nervous system in regulating heart rate during exercise. Which response best demonstrates application of physiological principles?

Accepted Answer

The sympathetic nervous system releases norepinephrine, increasing heart rate and cardiac output.

Question 5

Which of the following best describes homeostasis?

Accepted Answer

The process by which the body maintains a stable internal environment.

Question 6

A patient with chronic kidney disease is unable to regulate blood pH effectively. Which buffer system is primarily responsible for maintaining acid-base balance in the blood?

Accepted Answer

The bicarbonate buffer system

Question 7

Which of the following is a correct application of the Frank-Starling law of the heart?

Accepted Answer

An increase in venous return leads to an increase in stroke volume.

Question 8

A patient is experiencing hypovolemic shock. Which physiological mechanism is most likely to be activated to restore blood pressure?

Accepted Answer

Activation of the renin-angiotensin-aldosterone system (RAAS)

Question 9

Which equation best represents the relationship between pressure, flow, and resistance in the cardiovascular system?

Accepted Answer

$$Flow = \frac{Pressure}{Resistance}$$

Question 10

A nurse is caring for a patient with respiratory acidosis. Which laboratory value would most likely be elevated?

Accepted Answer

Partial pressure of carbon dioxide ($$PaCO_2)$$

Question 11

Which of the following best describes the function of the endocrine system?

Accepted Answer

To secrete hormones that regulate physiological processes throughout the body.

Question 12

A patient with type 1 diabetes mellitus is unable to produce insulin. Which organ is primarily affected?

Accepted Answer

Pancreas

Question 13

Which of the following scenarios best illustrates negative feedback in human physiology?

Accepted Answer

Increased blood glucose stimulates insulin release, which lowers blood glucose.

Question 14

A patient is given a medication that blocks acetylcholine receptors at the neuromuscular junction. What is the most likely effect?

Accepted Answer

Skeletal muscle paralysis

Question 15

Which of the following best explains why oxygen is essential for cellular respiration?

Accepted Answer

Oxygen acts as the final electron acceptor in the electron transport chain.

Question 16

A patient with anemia has a reduced oxygen-carrying capacity. Which component of blood is most directly responsible for this function?

Accepted Answer

Hemoglobin in red blood cells

Question 17

Which of the following best describes the role of the nephron in the kidney?

Accepted Answer

It filters blood, reabsorbs needed substances, and excretes waste as urine.

Question 18

A patient is experiencing tachycardia (rapid heart rate). Which division of the autonomic nervous system is most likely responsible?

Accepted Answer

Sympathetic nervous system

Question 19

Which of the following equations correctly represents the calculation of mean arterial pressure (MAP)?

Accepted Answer

$$MAP = Diastolic\ Pressure + \frac{1}{3}(Systolic\ Pressure - Diastolic\ Pressure)$$

Question 20

A nurse is assessing a patient with suspected metabolic alkalosis. Which finding would support this diagnosis?

Accepted Answer

Elevated serum bicarbonate ($$HCO_3$$^-$$)

PHY202L Human Physiology Laboratory – Course Syllabus and Study Guide

Study Guide - Practice Questions

Study Guide - Flashcards