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 of the following best describes a desmosome?

A cell junction that anchors cells together and provides mechanical stability.

A cell junction that allows direct communication between adjacent cells.

A cell junction that connects the cytoskeleton of a cell to the extracellular matrix.

A cell junction that forms a barrier to prevent the passage of molecules between cells.

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Verified step by step guidance

Identify the function of a desmosome: Desmosomes are specialized structures that provide strong adhesion between cells, particularly in tissues that experience mechanical stress, such as the skin and heart.

Understand the role of desmosomes in mechanical stability: They anchor cells together by connecting the intermediate filaments of the cytoskeleton of adjacent cells, thus providing mechanical stability.

Differentiate desmosomes from other cell junctions: Unlike gap junctions, which allow communication between cells, or tight junctions, which form barriers, desmosomes specifically focus on providing structural support.

Consider the tissue types where desmosomes are prevalent: Desmosomes are commonly found in epithelial tissues and cardiac muscle, where they help maintain the integrity of the tissue under stress.

Conclude with the best description: Based on the function and characteristics of desmosomes, the best description is 'A cell junction that anchors cells together and provides mechanical stability.'