Table of contents

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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

What are intercalated disks in muscle tissue?

Regions of smooth muscle that allow for peristalsis

Attachments of skeletal muscle to bone

Specialized connections between cardiac muscle cells that facilitate synchronized contraction

Sites of neurotransmitter release in neuromuscular junctions

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Intercalated disks are specialized structures found in cardiac muscle tissue.

These disks are crucial for the function of the heart as they facilitate the synchronized contraction of cardiac muscle cells.

Intercalated disks contain gap junctions and desmosomes. Gap junctions allow for electrical signals to pass quickly between cells, ensuring that the heart muscle contracts in a coordinated manner.

Desmosomes within the intercalated disks provide structural support by anchoring the cells together, which is essential for withstanding the mechanical stress during heartbeats.

Understanding the role of intercalated disks helps explain how the heart maintains its rhythmic and efficient pumping action, which is vital for effective circulation of blood throughout the body.