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 muscle is not involved in plantar flexing the foot?

Plantaris

Tibialis anterior

Gastrocnemius

Soleus

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Verified step by step guidance

Understand the action of plantar flexion: Plantar flexion is the movement that decreases the angle between the sole of the foot and the back of the leg, such as when you point your toes downward.

Identify the muscles typically involved in plantar flexion: The primary muscles responsible for plantar flexion include the gastrocnemius, soleus, and plantaris. These muscles are located in the posterior compartment of the leg.

Recognize the role of the tibialis anterior: The tibialis anterior is located in the anterior compartment of the leg and is primarily responsible for dorsiflexion, which is the opposite action of plantar flexion. It lifts the foot upwards.

Compare the actions of the listed muscles: While the gastrocnemius, soleus, and plantaris contribute to plantar flexion, the tibialis anterior does not. Instead, it facilitates dorsiflexion.

Conclude which muscle is not involved in plantar flexion: Based on the understanding of muscle actions, the tibialis anterior is not involved in plantar flexing the foot.