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

5. Integumentary System

Introduction to the Integumentary System

Anatomy & Physiology

5. Integumentary System

Introduction to the Integumentary System

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Multiple Choice

A dermatome is the area of skin supplied with sensory innervation by which of the following?

A single artery

Multiple cranial nerves

A single spinal nerve

The autonomic nervous system

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Verified step by step guidance

Understand the term 'dermatome': A dermatome is a specific area of skin that is innervated by sensory fibers from a single spinal nerve. This concept is crucial in understanding the organization of the peripheral nervous system.

Recognize the role of spinal nerves: Each spinal nerve corresponds to a specific segment of the spinal cord and provides sensory input to a defined area of skin. This is why dermatomes are mapped to specific spinal nerves.

Differentiate between spinal nerves and cranial nerves: Spinal nerves are responsible for dermatomal innervation, while cranial nerves primarily innervate the head and neck regions. Multiple cranial nerves do not supply a single dermatome.

Clarify the role of the autonomic nervous system: The autonomic nervous system regulates involuntary functions like heart rate and digestion, but it does not directly contribute to sensory innervation of the skin. Therefore, it is not involved in dermatomes.

Conclude that the correct answer is 'A single spinal nerve': Dermatomes are defined by the sensory innervation provided by individual spinal nerves, making this the correct choice.