Ch 17 part 1 vision

Front

What is the fovea?

Back

The fovea is the spot in the center of the retina where there is a high concentration of cones, allowing for sharp central vision.

Front

How is vision generated in the eye?

Back

Vision is generated through photoreceptors in the retina, which include rods and cones that convert light into neural signals.

Front

Which muscle is responsible for moving the eye upward?

Back

The superior rectus muscle is responsible for moving the eye upward.

Front

What is the function of the optic nerve?

Back

The optic nerve connects each eye to the visual cortex, transmitting visual information from the retina to the brain.

Front

What type of photoreceptor is most concentrated in the fovea centralis?

Back

The fovea centralis is most highly concentrated with cones, which are responsible for color vision and detail.

Front

What are rods and cones?

Back

Rods are photoreceptors that detect light and dark and are responsible for night vision, while cones detect color and are responsible for daylight vision.

Front

What role does the pupil play in vision?

Back

The pupil regulates the amount of light that enters the eye, adjusting its size in response to light conditions.

Front

What is the visual cortex?

Back

The visual cortex is the part of the brain that processes visual information received from the optic nerve.

Front

How do neurotransmitters relate to vision?

Back

Neurotransmitters are chemicals that transmit signals between neurons, playing a role in the communication of visual information in the brain.

Front

What is the difference between the medial and lateral rectus muscles?

Back

The medial rectus muscle moves the eye inward towards the nose, while the lateral rectus muscle moves the eye outward away from the nose.