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

4. Tissues & Histology

Introduction to Muscle Tissue

Anatomy & Physiology

4. Tissues & Histology

Introduction to Muscle Tissue

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Multiple Choice

Which statement explains why cardiac muscle is resistant to fatigue?

Cardiac muscle relies primarily on anaerobic respiration, which prevents fatigue.

Cardiac muscle has a high density of mitochondria, providing a continuous supply of ATP.

Cardiac muscle fibers are shorter and less dense, reducing energy consumption.

Cardiac muscle has a unique ability to store large amounts of glycogen for energy.

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Verified step by step guidance

Understand the role of mitochondria in muscle cells: Mitochondria are the powerhouses of the cell, responsible for producing ATP through aerobic respiration. A high density of mitochondria means more ATP can be produced efficiently.

Recognize the importance of ATP: ATP is the energy currency of the cell, and its continuous supply is crucial for muscle contraction and function. Cardiac muscle requires a constant supply of ATP to maintain its rhythmic contractions.

Consider the energy demands of cardiac muscle: Unlike skeletal muscle, cardiac muscle works continuously without rest, necessitating a reliable and efficient energy source to prevent fatigue.

Evaluate the statement about anaerobic respiration: Anaerobic respiration is less efficient than aerobic respiration and produces lactic acid, which can lead to fatigue. Cardiac muscle primarily relies on aerobic respiration due to its high mitochondrial density.

Analyze the role of glycogen storage: While glycogen is an important energy reserve, the primary reason cardiac muscle is resistant to fatigue is its high mitochondrial density, ensuring a steady supply of ATP through aerobic respiration.