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

13. The Peripheral Nervous System

Introduction to the Peripheral Nervous System

Anatomy & Physiology

13. The Peripheral Nervous System

Introduction to the Peripheral Nervous System

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Multiple Choice

Which of the following is true about spinal nerves?

There are 24 pairs of spinal nerves in the human body.

They are mixed nerves containing both sensory and motor fibers.

They only carry sensory information to the spinal cord.

Each spinal nerve is associated with only one vertebra.

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Verified step by step guidance

Understand the structure and function of spinal nerves: Spinal nerves are part of the peripheral nervous system and connect the spinal cord to the rest of the body. They are mixed nerves, meaning they contain both sensory fibers (which carry information to the spinal cord) and motor fibers (which carry commands from the spinal cord to muscles and glands).

Review the number of spinal nerves: There are 31 pairs of spinal nerves in the human body, not 24. These are categorized into cervical (8 pairs), thoracic (12 pairs), lumbar (5 pairs), sacral (5 pairs), and coccygeal (1 pair).

Clarify the sensory and motor roles: Spinal nerves are mixed nerves, so they do not exclusively carry sensory information. Instead, they carry both sensory and motor signals, making them essential for communication between the spinal cord and the body.

Examine the association with vertebrae: Each spinal nerve is associated with a specific segment of the spinal cord, not just one vertebra. For example, cervical spinal nerves are associated with cervical segments of the spinal cord, but their exit points may not align perfectly with the vertebrae due to anatomical variations.

Conclude the correct statement: Based on the above clarifications, the correct statement is that spinal nerves are mixed nerves containing both sensory and motor fibers.