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

10. Muscles

Muscle Actions

Anatomy & Physiology

10. Muscles

Muscle Actions

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Multiple Choice

Curling a dumbbell is an example of which action at the elbow?

Abduction

Rotation

Flexion

Extension

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Verified step by step guidance

Understand the anatomy of the elbow joint: The elbow is a hinge joint formed by the humerus, radius, and ulna. It allows movements such as flexion and extension.

Define flexion: Flexion is the action of decreasing the angle between two bones at a joint. In the case of the elbow, flexion occurs when the forearm moves closer to the upper arm.

Analyze the movement involved in curling a dumbbell: When curling a dumbbell, the forearm is brought closer to the upper arm, which decreases the angle at the elbow joint. This matches the definition of flexion.

Compare flexion with other options: Abduction refers to moving a limb away from the midline of the body, which does not apply to the elbow. Rotation involves turning a bone around its axis, which is not the primary movement in this scenario. Extension is the opposite of flexion, increasing the angle at the joint, which does not occur during a dumbbell curl.

Conclude that curling a dumbbell is an example of flexion at the elbow, as it involves decreasing the angle between the forearm and upper arm.