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

The muscle that generates the most power during elbow flexion is the __________.

brachialis

brachioradialis

triceps brachii

biceps brachii

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Verified step by step guidance

Step 1: Understand the anatomy of the elbow flexion movement. Elbow flexion is the action of decreasing the angle between the forearm and the upper arm, primarily involving muscles located in the anterior compartment of the arm.

Step 2: Identify the muscles involved in elbow flexion. The primary muscles responsible for this movement are the brachialis, biceps brachii, and brachioradialis. The triceps brachii is not involved in flexion; it is responsible for elbow extension.

Step 3: Analyze the role of each muscle. The brachialis is the strongest flexor of the elbow and generates the most power during flexion because it attaches directly to the ulna, which does not rotate during forearm movements. The biceps brachii assists in flexion but is also involved in supination of the forearm. The brachioradialis contributes to flexion, especially when the forearm is in a neutral position.

Step 4: Eliminate incorrect options. The triceps brachii is responsible for extension, not flexion, so it can be ruled out. While the biceps brachii and brachioradialis assist in flexion, they do not generate as much power as the brachialis.

Step 5: Conclude that the brachialis is the correct answer because it is the primary muscle responsible for generating the most power during elbow flexion.