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

The standing toe touch is most likely to result in which of the following muscle actions?

Extension of the knee

Rotation of the spine

Abduction of the thigh

Flexion of the trunk at the hip

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Verified step by step guidance

Understand the movement involved in a standing toe touch: This action requires bending forward at the waist to reach toward the toes, which primarily involves flexion of the trunk at the hip joint.

Identify the primary muscles responsible for flexion of the trunk: The rectus abdominis and iliopsoas muscles are key contributors to this movement, as they help bring the trunk closer to the thighs.

Rule out other options: Extension of the knee involves straightening the leg, which is not the primary action in a standing toe touch. Rotation of the spine involves twisting, which is not the focus here. Abduction of the thigh refers to moving the leg away from the midline, which is unrelated to this movement.

Focus on the correct action: Flexion of the trunk at the hip is the primary movement in a standing toe touch, as the trunk bends forward at the hip joint to achieve the position.

Relate the action to anatomy: The hip joint serves as the pivot point for this movement, and the muscles involved work together to create the flexion necessary for the standing toe touch.