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

10. Muscles

Muscle Actions

Anatomy & Physiology

10. Muscles

Muscle Actions

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Multiple Choice

Which of the following are two substances that muscles help to circulate throughout the body?

Blood and lymph

Hormones and enzymes

Glucose and bile

Oxygen and carbon dioxide

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Verified step by step guidance

Step 1: Begin by understanding the role of muscles in the circulatory system. Muscles, particularly skeletal muscles, assist in the movement of substances through the body by contracting and relaxing.

Step 2: Recognize that blood circulation is primarily driven by the heart, but skeletal muscles contribute to venous return by compressing veins during movement, helping blood flow back to the heart.

Step 3: Learn about the lymphatic system, which relies on muscle contractions to move lymph fluid through lymphatic vessels, as the lymphatic system lacks a central pump like the heart.

Step 4: Evaluate the options provided in the question. Blood and lymph are substances directly influenced by muscle activity, while hormones, enzymes, glucose, bile, oxygen, and carbon dioxide are transported by other mechanisms.

Step 5: Conclude that the correct answer is 'Blood and lymph,' as these are the two substances muscles help circulate throughout the body.