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 two muscle groups work as antagonistic pairs in the leg?

Gastrocnemius and Soleus

Adductors and Abductors

Quadriceps and Hamstrings

Tibialis anterior and Peroneus longus

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Verified step by step guidance

Understand the concept of antagonistic muscle pairs: These are pairs of muscles that work opposite each other to create movement. When one muscle contracts, the other relaxes, allowing for smooth and controlled motion.

Identify the function of the Quadriceps: The quadriceps are a group of muscles located at the front of the thigh. Their primary function is to extend the knee, which is crucial for activities like walking, running, and jumping.

Identify the function of the Hamstrings: The hamstrings are located at the back of the thigh. Their main role is to flex the knee and extend the hip, which is important for movements such as bending the knee and moving the leg backward.

Recognize how the Quadriceps and Hamstrings work as antagonistic pairs: When the quadriceps contract to extend the knee, the hamstrings must relax. Conversely, when the hamstrings contract to flex the knee, the quadriceps must relax.

Apply this understanding to the problem: By knowing the functions and interactions of these muscle groups, you can identify that the Quadriceps and Hamstrings work as antagonistic pairs in the leg.