The Human Eye: Structure and Function
An 11th-grade science worksheet exploring the anatomy and physiology of the human eye and the process of vision.
Includes
Standards
Topics
The Human Eye: Structure and Function
Name:
Date:
Score:
Read each question carefully and provide your best answer based on your knowledge of the human eye and vision. Refer to the diagram as needed.
Observe the diagram of the human eye cross-section below. Identify the labeled parts and answer the questions that follow.
1. Which labeled structure is responsible for controlling the amount of light entering the eye?
2. Describe the primary function of the retina.
3. Which of the following conditions is characterized by a clouding of the lens, leading to blurred vision?
Glaucoma
Myopia
Cataract
Astigmatism
4. Rods and cones are photoreceptors found in the retina. Which statement accurately describes their primary function?
Rods detect color, cones detect dim light.
Rods detect dim light, cones detect color.
Both rods and cones detect color.
Both rods and cones detect dim light.
5. The is the transparent outer layer of the eye that helps to focus light.
6. The process by which the eye changes the shape of the lens to focus on objects at different distances is called .
7. The optic nerve transmits electrical signals from the retina to the brain.
True
False
8. The vitreous humor is a watery fluid found in the anterior chamber of the eye.
True
False
9. Explain how the pupil and iris work together to regulate light intake.