Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

18. The Heart

Cardiac Cycle

Anatomy & Physiology

18. The Heart

Cardiac Cycle

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which of the following statements about cardiac output is correct?

Cardiac output is the volume of blood pumped by each ventricle per minute.

Cardiac output is the amount of blood ejected from the atria during one heartbeat.

Cardiac output is the total volume of blood in the circulatory system.

Cardiac output is the pressure generated by the left ventricle during systole.

Previous problemNext problem

Verified step by step guidance

Step 1: Begin by understanding the term 'cardiac output.' Cardiac output refers to the volume of blood pumped by each ventricle of the heart per minute. It is a key measure of heart function and circulatory efficiency.

Step 2: Recall the formula for cardiac output: CO = HR × SV, where CO is cardiac output, HR is heart rate (beats per minute), and SV is stroke volume (volume of blood ejected by a ventricle per beat). This formula highlights the relationship between heart rate and stroke volume in determining cardiac output.

Step 3: Analyze the options provided in the question. The correct definition of cardiac output is the volume of blood pumped by each ventricle per minute. The other options describe different concepts: blood ejected from the atria (not ventricles), total blood volume in the circulatory system, and pressure generated during systole.

Step 4: Eliminate incorrect options by comparing them to the definition of cardiac output. For example, cardiac output is not the total blood volume in the circulatory system, nor is it the pressure generated by the left ventricle during systole.

Step 5: Conclude that the correct statement is: 'Cardiac output is the volume of blood pumped by each ventricle per minute.' This aligns with the physiological definition and the formula for cardiac output.