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

3. Energy & Cell Processes

ATP

Anatomy & Physiology

3. Energy & Cell Processes

ATP

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Multiple Choice

What is the role of ATP in muscle contraction?

ATP acts as a neurotransmitter to initiate muscle contraction.

ATP binds to troponin to expose binding sites on actin filaments.

ATP is responsible for storing calcium ions in the sarcoplasmic reticulum.

ATP provides the energy needed for muscle contraction by breaking the cross-bridge between actin and myosin.

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Verified step by step guidance

Understand the role of ATP in muscle contraction: ATP is crucial for providing the energy required for muscle contraction.

Recognize the process of cross-bridge cycling: During muscle contraction, myosin heads bind to actin filaments forming cross-bridges.

Identify the role of ATP in cross-bridge detachment: ATP binds to the myosin head, causing it to detach from the actin filament, breaking the cross-bridge.

Learn about ATP hydrolysis: The hydrolysis of ATP to ADP and inorganic phosphate provides the energy needed for the myosin head to return to its original position, ready to form a new cross-bridge.

Understand the cycle continuation: This process of ATP binding, hydrolysis, and cross-bridge cycling continues as long as calcium ions and ATP are available, allowing for sustained muscle contraction.