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

Which of the following best describes pronation?

Decreasing the angle between two bones

Turning the palm upward or anteriorly

Moving a limb away from the midline of the body

Turning the palm downward or posteriorly

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Verified step by step guidance

Understand the term 'pronation' in the context of Anatomy & Physiology. Pronation refers to a specific movement of the forearm or foot. In the forearm, it involves rotating the radius over the ulna, turning the palm downward or posteriorly.

Review the anatomical position. In the standard anatomical position, the palms face forward (anteriorly). Pronation changes this position by rotating the palm to face downward or posteriorly.

Differentiate pronation from other movements. For example, supination is the opposite of pronation and involves turning the palm upward or anteriorly. Ensure you understand the contrast between these terms.

Eliminate incorrect options based on the definition of pronation. For example, 'Decreasing the angle between two bones' describes flexion, not pronation. 'Moving a limb away from the midline of the body' describes abduction, not pronation.

Confirm the correct answer: Pronation is best described as 'Turning the palm downward or posteriorly.' This matches the definition and anatomical movement associated with pronation.