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

4. Tissues & Histology

Introduction to Muscle Tissue

Anatomy & Physiology

4. Tissues & Histology

Introduction to Muscle Tissue

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Multiple Choice

Which of the following muscles is primarily responsible for inspiration during respiration?

Rectus abdominis

Trapezius

Diaphragm

External oblique

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Verified step by step guidance

Understand the process of inspiration: During respiration, inspiration involves the intake of air into the lungs, which requires the expansion of the thoracic cavity.

Identify the primary muscle responsible for inspiration: The diaphragm is the primary muscle involved in inspiration. It contracts and moves downward, increasing the volume of the thoracic cavity and reducing pressure, allowing air to flow into the lungs.

Eliminate incorrect options: The rectus abdominis and external oblique are abdominal muscles primarily involved in movements like flexion and rotation of the trunk, not respiration. The trapezius is a back muscle involved in moving the scapula and supporting the arm, not inspiration.

Understand the role of accessory muscles: While the diaphragm is the main muscle for inspiration, accessory muscles like the external intercostals assist by elevating the ribs to further expand the thoracic cavity during deep breathing.

Conclude the correct answer: Based on the anatomy and physiology of respiration, the diaphragm is the correct answer as it is the primary muscle responsible for inspiration.