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

The Lens and Focusing Light on the Retina

Anatomy & Physiology

15. The Special Senses

The Lens and Focusing Light on the Retina

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Multiple Choice

Which part of the eye can change shape to help focus light on the retina?

Iris

Cornea

Lens

Retina

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Verified step by step guidance

Understand the basic anatomy of the eye: The eye is composed of several parts, each with a specific function. The main parts include the cornea, iris, lens, and retina.

Identify the function of each part: The cornea is the transparent front layer that helps to focus light. The iris is the colored part of the eye that controls the size of the pupil. The lens is a flexible, transparent structure that changes shape to focus light on the retina. The retina is the layer at the back of the eye that contains cells sensitive to light.

Focus on the lens: The lens is unique because it can change its shape. This ability is crucial for focusing light precisely on the retina, allowing us to see objects clearly at various distances.

Explain the process of accommodation: Accommodation is the process by which the lens changes shape. When you look at something close, the lens becomes thicker to increase its refractive power. When you look at something far away, the lens becomes thinner.

Conclude with the role of the lens: The lens's ability to change shape is essential for focusing light on the retina, making it the correct answer to the question about which part of the eye can change shape to help focus light.