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

1. Introduction to Anatomy & Physiology

Introduction to Directional Terms

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Directional Terms

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Multiple Choice

Which of the following spinal nerve plexuses is responsible for innervating the diaphragm?

Sacral plexus

Lumbar plexus

Brachial plexus

Cervical plexus

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Verified step by step guidance

Understand the concept of a spinal nerve plexus: A plexus is a network of intersecting nerves that serve specific regions of the body. Spinal nerve plexuses are formed by the anterior rami of spinal nerves and are responsible for innervating various muscles and skin areas.

Identify the function of the diaphragm: The diaphragm is a dome-shaped muscle that plays a critical role in respiration by contracting and relaxing to facilitate breathing.

Learn which nerve innervates the diaphragm: The phrenic nerve is the primary nerve responsible for innervating the diaphragm. It controls its motor function and provides sensory information.

Determine the origin of the phrenic nerve: The phrenic nerve arises from the cervical plexus, specifically from spinal nerves C3, C4, and C5. A common mnemonic to remember this is 'C3, C4, C5 keep the diaphragm alive.'

Match the cervical plexus to the question: Since the phrenic nerve originates from the cervical plexus and is responsible for innervating the diaphragm, the correct answer to the question is the cervical plexus.