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

2. Cell Chemistry & Cell Components

Cell Junctions

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Cell Junctions

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Multiple Choice

Which is the primary function of an intercalated disc in cardiac muscle tissue?

To store calcium ions for muscle contraction

To facilitate rapid electrical communication between cardiac cells

To provide a barrier to prevent the passage of ions

To anchor muscle fibers to the extracellular matrix

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Verified step by step guidance

Understand that intercalated discs are specialized structures found in cardiac muscle tissue.

Recognize that cardiac muscle cells need to work in a coordinated manner to ensure effective heart contractions.

Intercalated discs contain gap junctions, which are crucial for electrical communication between cardiac cells.

These gap junctions allow ions to pass quickly from one cell to another, facilitating rapid electrical signals.

Thus, the primary function of intercalated discs is to enable synchronized contraction of the heart by allowing rapid electrical communication between cardiac cells.