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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

Why are skeletal and cardiac muscles striated?

Because they contain sarcomeres with alternating bands of actin and myosin filaments.

Because they have a high density of mitochondria for energy production.

Because they are composed of smooth muscle fibers.

Because they are controlled by the autonomic nervous system.

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Understand the structure of muscle fibers: Skeletal and cardiac muscles are composed of muscle fibers that have a distinct banding pattern known as striations.

Learn about sarcomeres: Sarcomeres are the basic functional units of muscle fibers, responsible for muscle contraction. They are organized in a repeating pattern within the muscle fibers.

Identify the components of sarcomeres: Sarcomeres contain alternating bands of actin (thin filaments) and myosin (thick filaments), which create the striated appearance.

Explore the role of actin and myosin: During muscle contraction, actin and myosin filaments slide past each other, which is facilitated by the striated arrangement within the sarcomeres.

Differentiate between muscle types: Recognize that smooth muscle fibers do not have sarcomeres and therefore lack striations, unlike skeletal and cardiac muscles.