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

Microscopes

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Microscopes

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Multiple Choice

What is the purpose of the coarse adjustment knob on a microscope?

To fine-tune the focus of the specimen

To adjust the light intensity

To change the magnification level

To bring the specimen into general focus

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Verified step by step guidance

Understand the basic components of a microscope: A microscope typically has several parts, including the eyepiece, objective lenses, stage, light source, and focusing knobs.

Identify the focusing knobs: Microscopes usually have two focusing knobs - the coarse adjustment knob and the fine adjustment knob.

Learn the function of the coarse adjustment knob: The coarse adjustment knob is used to move the stage or the objective lenses up and down to bring the specimen into general focus. It allows for larger, quicker adjustments compared to the fine adjustment knob.

Differentiate between coarse and fine adjustment: The coarse adjustment knob is used for initial focusing, especially when using low power objectives, while the fine adjustment knob is used for precise focusing once the specimen is roughly in focus.

Apply this knowledge: When using a microscope, start with the coarse adjustment knob to bring the specimen into view, then switch to the fine adjustment knob for detailed focusing.