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

Why does immersion oil improve the resolution of a microscope?

It increases the numerical aperture of the objective lens.

It changes the wavelength of light used for illumination.

It decreases the magnification of the microscope.

It reduces the working distance between the lens and the specimen.

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Verified step by step guidance

Understand the concept of resolution in microscopy: Resolution is the ability of a microscope to distinguish two close points as separate entities. Higher resolution means clearer and more detailed images.

Learn about numerical aperture: Numerical aperture (NA) is a measure of a microscope's ability to gather light and resolve fine specimen detail at a fixed object distance. It is influenced by the refractive index of the medium between the specimen and the objective lens.

Explore the role of immersion oil: Immersion oil has a refractive index similar to glass, which helps to minimize light refraction and loss as light passes from the specimen to the objective lens. This increases the numerical aperture.

Analyze how immersion oil improves resolution: By increasing the numerical aperture, immersion oil allows more light to enter the objective lens, enhancing the resolution and clarity of the image.

Consider the incorrect options: Immersion oil does not change the wavelength of light, decrease magnification, or reduce the working distance. Its primary function is to increase the numerical aperture, thereby improving resolution.