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 must be done before viewing a slide at 100x magnification using a compound light microscope?

Apply immersion oil to the slide.

Switch to a lower magnification objective.

Clean the eyepiece lens.

Adjust the coarse focus knob.

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Verified step by step guidance

Begin by ensuring that the slide is properly prepared and placed on the stage of the microscope. This involves securing the slide with stage clips to prevent movement during observation.

Start with the lowest magnification objective lens, typically 4x or 10x, to locate the specimen on the slide. This makes it easier to find and center the area of interest before increasing magnification.

Use the coarse focus knob to bring the specimen into general focus. This knob moves the stage up and down more significantly, allowing for quick adjustments at lower magnifications.

Once the specimen is centered and roughly focused, switch to a higher magnification objective lens, such as 40x, to refine the focus using the fine focus knob. This knob allows for more precise adjustments.

Before switching to the 100x magnification, apply a drop of immersion oil directly onto the slide where the light will pass through. This oil reduces light refraction and improves image clarity at high magnifications. Then, carefully switch to the 100x oil immersion objective lens and use the fine focus knob to achieve a clear image.