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 is NOT a muscle primarily involved in the breathing process?

External intercostals

Internal intercostals

Rectus abdominis

Diaphragm

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Verified step by step guidance

Understand the primary muscles involved in the breathing process. Breathing relies on muscles that facilitate the expansion and contraction of the thoracic cavity, such as the diaphragm and intercostal muscles.

Review the function of the diaphragm. The diaphragm is the primary muscle of respiration, contracting to increase thoracic volume during inhalation and relaxing during exhalation.

Examine the role of the external and internal intercostals. These muscles assist in breathing by elevating or depressing the ribs, contributing to the expansion and contraction of the thoracic cavity.

Analyze the function of the rectus abdominis. This muscle is part of the abdominal wall and primarily involved in trunk flexion and stabilization, not respiration.

Conclude that the rectus abdominis is NOT primarily involved in the breathing process, as its function is unrelated to the mechanics of thoracic cavity expansion or contraction.