The Anatomy and Function of the Eye

The video tutorial provides an in-depth look at the structure and function of the human eye. It explains how the eye acts as a sensory receptor, converting light stimuli into electrical impulses for the CNS. The tutorial covers the retina's role, detailing rod and cone cells' functions in light and color detection. It also discusses the pupil and iris's role in regulating light entry, and the cornea and lens's function in refracting and focusing light. The process of focusing on near and distant objects is explained, highlighting the lens's adaptability. The presentation concludes with a labeled diagram of the eye.

What is the primary function of the eye as a sensory receptor?

• To detect sound waves

• To detect chemical signals

• To detect changes in light intensity

• To detect temperature changes

Which type of receptor cell in the retina is responsible for detecting color?

• Rod cells

• Cone cells

• Ganglion cells

• Bipolar cells

How does the iris respond to bright light conditions?

• It expands to make the pupil smaller

• It remains unchanged

• It changes color

• It contracts to make the pupil larger

What is the main role of the cornea in the eye?

• To change the color of the eye

• To produce tears

• To refract light entering the eye

• To detect sound

When focusing on a nearby object, how does the lens adjust?

• It becomes thinner

• It becomes thicker

• It remains the same

• It changes color

What happens to light rays from a distant object as they enter the eye?

• They diverge strongly

• They converge immediately

• They become parallel

• They change color

What is the process called when light rays change direction as they pass through the cornea and lens?

• Reflection

• Diffusion

• Refraction

• Absorption