6.0-4: Eye Structure & Function Dissection

What is the most anterior structure of the cow eye, which appears cloudy after preservation but is clear like glass in a live animal?

• Optic nerve

• Retina

• Cornea

• Sclera

What is the primary function of the peri-orbital fat and connective tissue surrounding the eye?

• To transmit visual signals to the brain.

• To protect the delicate structures of the eye within the bony orbit.

• To allow the eye to move up, down, left, and right.

• To maintain the shape of the cornea.

What is the name of the liquid that is released when the eye is cut, and what is its primary role?

• Vitreous humor, to detect incoming light

• Aqueous humor, to maintain the shape of the eye

• Optic fluid, to nourish the retina

• Corneal fluid, to lubricate the eye muscles

Which part of the eye contains photoreceptors for detecting light, and what substance helps keep it pressed against the inside of the eye?

• Cornea; aqueous humor

• Optic nerve; peri-orbital fat

• Retina; vitreous humor

• Sclera; eye muscles

What is the term for the spot in the retina where light cannot be detected?

• Optic nerve

• Optic disc

• Retina

• Choroid

Which structure found in nocturnal animals reflects additional light to improve night vision?

• Retina

• Choroid

• Tapetum

• Sclera

What is the function of the black-colored choroid layer in the eye?

• Focus light

• Absorb excess light

• Reflect light for night vision

• Provide structural support

What structure is responsible for changing the shape of the lens to focus light?

• Iris

• Cornea

• Ciliary body

• Pupil