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

15. The Special Senses

Introduction to Special Senses

Anatomy & Physiology

15. The Special Senses

Introduction to Special Senses

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Multiple Choice

What is the primary function of a Snellen chart?

To evaluate depth perception

To test color vision

To assess peripheral vision

To measure visual acuity

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Verified step by step guidance

Begin by understanding what a Snellen chart is. It is a tool used in optometry to measure visual acuity, which refers to the clarity or sharpness of vision.

Visual acuity is typically assessed by having a person read letters of varying sizes from a specific distance, usually 20 feet, to determine how well they can see.

The Snellen chart consists of rows of letters that decrease in size as you move down the chart. The smallest row that a person can read accurately indicates their visual acuity.

The measurement is often expressed as a fraction, such as 20/20, where the numerator represents the test distance and the denominator represents the distance at which a person with normal vision can read the same line.

Therefore, the primary function of a Snellen chart is to measure visual acuity, not to evaluate depth perception, test color vision, or assess peripheral vision.