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

Which muscle is primarily responsible for separating the toes?

Flexor digitorum brevis

Plantar interossei

Dorsal interossei

Abductor hallucis

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Verified step by step guidance

Step 1: Understand the function of the muscles listed in the problem. Each muscle has a specific role in foot movement. For example, the flexor digitorum brevis flexes the toes, the plantar interossei adduct the toes, the abductor hallucis abducts the big toe, and the dorsal interossei abduct the toes (spread them apart).

Step 2: Focus on the action described in the question: separating the toes. This action is known as abduction, which involves moving the toes away from the midline of the foot.

Step 3: Identify which muscle group is responsible for abduction of the toes. The dorsal interossei are the primary muscles responsible for this action, as they abduct the toes (spread them apart).

Step 4: Compare the functions of the other muscles listed. The flexor digitorum brevis flexes the toes, which is unrelated to abduction. The plantar interossei adduct the toes (bring them closer together), which is the opposite of abduction. The abductor hallucis only abducts the big toe, not all toes.

Step 5: Conclude that the dorsal interossei are the correct answer because they are the muscles primarily responsible for separating the toes through abduction.