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 nerve extends down the thumb side of the arm into the back of the hand?

Musculocutaneous nerve

Ulnar nerve

Radial nerve

Median nerve

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Verified step by step guidance

Step 1: Begin by identifying the anatomical location described in the question. The thumb side of the arm refers to the lateral side of the arm, which is associated with the radius bone.

Step 2: Understand the function and pathway of the nerves listed. The radial nerve is responsible for innervating the posterior aspect of the arm and forearm, including the back of the hand and thumb side.

Step 3: Compare the radial nerve to the other options. The musculocutaneous nerve primarily innervates the anterior muscles of the arm. The ulnar nerve is associated with the medial side of the arm and hand, while the median nerve primarily innervates the anterior forearm and parts of the hand.

Step 4: Recognize that the radial nerve extends down the posterior arm, crosses near the lateral side (thumb side), and provides sensory innervation to the back of the hand.

Step 5: Conclude that the radial nerve is the correct answer based on its anatomical pathway and sensory distribution to the thumb side of the arm and back of the hand.