BIOLOGY - Physiology - The eye, structure and parts

The video explains the human eye's structure and function, detailing how light is processed into sight. It covers the roles of the cornea, lens, iris, pupil, and photoreceptor cells, and how these components work together to enable vision. The video also discusses the brain's role in interpreting visual information.

What is the primary function of the human eye?

• To convert sound into electrical impulses

• To convert light into electrical impulses

• To convert taste into electrical impulses

• To convert touch into electrical impulses

How does the lens of the eye adjust when viewing objects at different distances?

• It changes color based on distance

• It remains the same thickness regardless of distance

• It becomes thinner for distant objects and thicker for close objects

• It becomes thicker for distant objects and thinner for close objects

What role does the iris play in vision?

• It focuses light onto the retina

• It detects color

• It regulates the size of the pupil

• It converts light into electrical impulses

Which type of photoreceptor cell is responsible for night vision?

• Bipolar cells

• Ganglion cells

• Rod cells

• Cone cells

What is the blind spot in the human eye?

• An area with extra photoreceptor cells

• An area with only rod cells

• An area with no photoreceptor cells

• An area with only cone cells