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

Introduction to the Cytoskeleton

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Introduction to the Cytoskeleton

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Multiple Choice

Which of the following structures is not composed of microtubules?

Mitotic spindle

Flagella

Cilia

Microvilli

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Understand the composition of microtubules: Microtubules are cylindrical structures made of tubulin proteins, and they play a crucial role in cell shape, intracellular transport, and cell division.

Identify structures composed of microtubules: Mitotic spindle, flagella, and cilia are all structures that contain microtubules. The mitotic spindle is involved in chromosome separation during cell division, flagella are used for cell movement, and cilia are used for movement and sensory functions.

Examine the structure of microvilli: Microvilli are small, finger-like projections on the surface of some cells, primarily involved in increasing surface area for absorption. They are composed of actin filaments, not microtubules.

Compare the structural components: While microtubules are found in the mitotic spindle, flagella, and cilia, microvilli are composed of actin filaments, which are different from microtubules.

Conclude which structure is not composed of microtubules: Based on the structural composition, microvilli do not contain microtubules, unlike the other structures listed.