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

9. Muscle Tissue

Introduction to Muscles and Muscle Tissue

Anatomy & Physiology

9. Muscle Tissue

Introduction to Muscles and Muscle Tissue

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Multiple Choice

Which of the following best describes the primary function of axial muscles?

They store calcium for muscle contraction.

They are responsible for voluntary control of facial expressions.

They support and position the head, neck, and trunk.

They move the limbs and appendages.

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Verified step by step guidance

Step 1: Understand the term 'axial muscles'—these are muscles located along the central axis of the body, including the head, neck, and trunk. Their primary role is related to stabilizing and positioning these regions.

Step 2: Eliminate incorrect options by analyzing their relevance to axial muscles. For example, storing calcium for muscle contraction is a function of the sarcoplasmic reticulum within muscle cells, not specific to axial muscles.

Step 3: Consider the option about voluntary control of facial expressions. While facial muscles are involved in expressions, they are categorized as cranial muscles, not axial muscles.

Step 4: Evaluate the option about moving limbs and appendages. Limb movement is primarily controlled by appendicular muscles, not axial muscles.

Step 5: Conclude that the correct description of axial muscles is their role in supporting and positioning the head, neck, and trunk, as this aligns with their anatomical location and function.