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

2. Cell Chemistry & Cell Components

Cell Junctions

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Cell Junctions

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Multiple Choice

Which cell junctions prevent substances from passing between adjacent cells?

Desmosomes

Tight junctions

Adherens junctions

Gap junctions

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Verified step by step guidance

Begin by understanding the function of cell junctions, which are structures that connect adjacent cells and facilitate communication and adhesion.

Identify the different types of cell junctions: desmosomes, tight junctions, adherens junctions, and gap junctions.

Desmosomes are primarily involved in providing mechanical strength to tissues by anchoring cells together, but they do not prevent substances from passing between cells.

Adherens junctions also contribute to cell adhesion and are linked to the actin cytoskeleton, but they do not form a barrier to prevent substance passage.

Tight junctions are specialized structures that seal the space between adjacent cells, creating a barrier that prevents the passage of substances between cells, thus maintaining the distinct environments of the apical and basal sides of epithelial cells.