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

Dynamic instability is the ability of a microtubule to do which of the following?

Maintain a constant length by balancing growth and shrinkage.

Bind permanently to actin filaments for structural support.

Rapidly grow and shrink by adding or losing tubulin subunits.

Form stable structures that do not change over time.

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Verified step by step guidance

Understand the concept of dynamic instability in microtubules. Dynamic instability refers to the rapid growth and shrinkage of microtubules, which is essential for their function in cellular processes.

Recognize that microtubules are composed of tubulin subunits. These subunits can be added or removed from the ends of the microtubule, leading to changes in length.

Identify the role of tubulin subunits in dynamic instability. The addition of tubulin subunits results in microtubule growth, while the loss of tubulin subunits leads to shrinkage.

Differentiate dynamic instability from other microtubule behaviors. Unlike maintaining a constant length or forming stable structures, dynamic instability involves continuous and rapid changes in microtubule length.

Conclude that dynamic instability allows microtubules to rapidly grow and shrink by adding or losing tubulin subunits, which is crucial for their role in cellular dynamics and functions.