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

What is the name of the muscles that expand and contract the rib cage during breathing?

Latissimus dorsi

Diaphragm

Pectoralis major

Intercostal muscles

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Verified step by step guidance

Begin by understanding the anatomy of the rib cage and its role in the respiratory system. The rib cage protects vital organs and assists in the breathing process by expanding and contracting.

Identify the muscles involved in the movement of the rib cage during breathing. These muscles are responsible for changing the volume of the thoracic cavity, which facilitates inhalation and exhalation.

Focus on the intercostal muscles, which are located between the ribs. These muscles play a crucial role in the mechanics of breathing by elevating and depressing the ribs.

Differentiate between the types of intercostal muscles: external intercostals, which aid in inhalation by elevating the ribs, and internal intercostals, which assist in exhalation by depressing the ribs.

Understand the coordination between the intercostal muscles and the diaphragm, another key muscle in breathing. The diaphragm contracts to increase thoracic volume during inhalation, while the intercostal muscles adjust the rib cage to accommodate this change.