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

3. Energy & Cell Processes

Phases of Mitosis

Anatomy & Physiology

3. Energy & Cell Processes

Phases of Mitosis

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Multiple Choice

What structure pulls chromosomes away from the middle of the cell during anaphase?

Cell membrane

Nuclear envelope

Centrioles

Spindle fibers

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Verified step by step guidance

Understand the context: Anaphase is a stage in mitosis where replicated chromosomes are separated and moved to opposite poles of the cell.

Identify the key players: During anaphase, the structures involved in moving the chromosomes are the spindle fibers, which are part of the mitotic spindle apparatus.

Recognize the role of spindle fibers: Spindle fibers are composed of microtubules that extend from the centrioles located at opposite poles of the cell.

Explain the mechanism: The spindle fibers attach to the centromeres of the chromosomes and shorten, pulling the sister chromatids apart toward the centrioles.

Clarify the function of other structures: The cell membrane and nuclear envelope do not play a direct role in pulling chromosomes apart during anaphase; their roles are more structural and regulatory in the cell cycle.