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

17. The Blood

Introduction To Blood

Anatomy & Physiology

17. The Blood

Introduction To Blood

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 is not important in preventing backflow of blood in the circulatory system?

Blood pressure

Smooth muscle contraction

Valves in veins

Red blood cells

Previous problemNext problem

Verified step by step guidance

Understand the concept of blood flow in the circulatory system: Blood flows through the circulatory system, which includes arteries, veins, and capillaries. The heart pumps blood, creating pressure that moves blood through these vessels.

Identify the mechanisms that prevent backflow: In the circulatory system, several mechanisms prevent the backflow of blood, ensuring it moves in the correct direction. These include blood pressure, smooth muscle contraction, and valves in veins.

Examine the role of blood pressure: Blood pressure is the force exerted by circulating blood on the walls of blood vessels. It helps maintain forward flow and prevents backflow by keeping blood moving through the system.

Consider the function of smooth muscle contraction: Smooth muscles in the walls of blood vessels contract to help regulate blood flow and pressure, contributing to the prevention of backflow.

Evaluate the role of red blood cells: Red blood cells are primarily responsible for carrying oxygen and carbon dioxide. They do not play a direct role in preventing backflow of blood, unlike the other mechanisms mentioned.