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

9. Muscle Tissue

Introduction to Muscles and Muscle Tissue

Anatomy & Physiology

9. Muscle Tissue

Introduction to Muscles and Muscle Tissue

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Multiple Choice

Which muscle of the anterior forearm is responsible for flexion and adduction of the wrist?

Pronator teres

Palmaris longus

Flexor carpi ulnaris

Flexor carpi radialis

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Verified step by step guidance

Step 1: Understand the function of the muscles listed in the problem. The question asks for the muscle responsible for flexion and adduction of the wrist. Flexion refers to decreasing the angle between the forearm and the hand, while adduction refers to moving the wrist toward the midline of the body.

Step 2: Analyze the role of each muscle option provided: Pronator teres primarily assists in pronation of the forearm, Palmaris longus contributes to wrist flexion but does not perform adduction, Flexor carpi radialis performs wrist flexion and abduction (not adduction), and Flexor carpi ulnaris performs both wrist flexion and adduction.

Step 3: Recall the anatomical location of the Flexor carpi ulnaris. It is located on the medial side of the anterior forearm, which aligns with its function of adducting the wrist toward the midline.

Step 4: Confirm the action of Flexor carpi ulnaris by reviewing its insertion point. The muscle inserts on the pisiform bone, hamate bone, and the base of the fifth metacarpal, which allows it to perform both flexion and adduction of the wrist.

Step 5: Conclude that the correct answer is Flexor carpi ulnaris based on its anatomical location, insertion points, and functional role in flexion and adduction of the wrist.