Eye Physiology

Dim light causes the pupil to:

• Dilate

• Constrict

• Stay the same

• No

Receives light from the lens, converting it to neural signals and transmitting them to the brain for visual recognition.

• Pupil

• Retina

• Cornea

• Sclera

Answer explanation

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-3

Regulates the amount of light entering the eye. Focuses light rays on the retina.

• Retina

• Sclera

• Iris

• Macula

Answer explanation

Focuses the light rays that pass through it and changes focal distance of the eye

• Lens

• Sclera

• Choroid

Answer explanation

Changes the shape of the lens when the eye focuses. It also makes the clear fluid that fills the space between the cornea and the iris.

• Ciliary Body

• Vitreous

• Macula

• Choroid

Answer explanation

Tags

NGSS.MS-LS1-3

Dark-colored melanin pigment in the choroid absorbs light and limits reflections within the eye that could degrade vision.

• Macula

• Vitreous

• Choroid

Answer explanation

High concentration of photoreceptor cells which send signals to brain which makes an image

• Macula

• Vitreous

• Pupil

Answer explanation

Tags

NGSS.MS-LS1-2

A light - sensitive layer of tissue at the back of the eye that turns light into

electrical signals.

• Retina

• Macula

• Photoreceptors

• Optic Nerve

• Lens

Answer explanation

Photoreceptors are cells that detect light basically...

Protects interior components of the eye injury makes up exterior of eye

• Optic Nerve

• Choroid

• Vitreous

• Sclera

Answer explanation

The optic nerve does not carry visual messages and send electrical signals to the

brain

• TRUE

• FALSE

Answer explanation

1 million nerve fibers. Electrical signals travel from the retina through optic nerve to the brain