Sheep Eye Dissection Flashcards

Questions and Answers

What is the sclera?

Focusing the arriving image

Transfer of visual information

Attachment site for eye muscle (correct)

To allow light through

What does the optic nerve do?

Transfer of visual information (correct)

Helps maintain eye shape

Controls the size of the pupil

Adjusts the shape of the lens

What is the primary function of the cornea?

Receive light from lens

Controls the size of the pupil

To allow light through (correct)

Focusing the arriving image

What is the function of the lens?

Focusing the arriving image Signup and view all the answers

What does the ciliary body do?

Adjusts shape of lens Signup and view all the answers

What is the role of the choroid in the eye?

Delivers oxygen and nutrients to retina Signup and view all the answers

What does the retina do?

Receives light from the lens Signup and view all the answers

What is the optic disk?

Place where axon exits Signup and view all the answers

What function does vitreous humor serve?

Helps maintain eye shape Signup and view all the answers

What is the primary function of the pupil?

Light into the eye Signup and view all the answers

What is the role of the iris?

Controls the size of pupil Signup and view all the answers

What is unique about the choroid?

It is a thin black/brown film covering the eye. Signup and view all the answers

What does the ciliary body look like?

Black with 'spokes' Signup and view all the answers

What is the structure of the cornea?

Clear 'disk' covering the iris and pupil Signup and view all the answers

Describe the optic nerve.

It is the cranial nerve that serves the retina. Signup and view all the answers

What does the pupil do?

It is the opening through which light enters the eye. Signup and view all the answers

What is the retina beneath the choroid?

Thin, translucent film covering the eye. Signup and view all the answers

What functions are associated with the sclera?

Attachment for eye muscles Signup and view all the answers

What are key components of the eye and their respective features?

Extrinsic muscles Signup and view all the answers

Which structures are associated with the optic nerve?

Sclera Signup and view all the answers

What does the ciliary body and lens do?

Lens focusing light Signup and view all the answers

Identify the primary components of the iris and pupil.

Pupil Signup and view all the answers

Study Notes

Eye Anatomy Key Terms

Sclera: Tough, white outer coat of the eyeball; attachment site for eye muscles.
Optic Nerve: Cranial nerve responsible for transferring visual information from the retina; appears as a white line at the back of the eye.
Cornea: Clear, dome-shaped surface that covers the iris and pupil; allows light to enter the eye.
Lens: Transparent structure that focuses incoming light to form images on the retina.
Ciliary Body: Black structure with "spokes"; adjusts the shape of the lens for focusing; anchors suspensory ligaments.
Choroid: Thin black/brown layer beneath the sclera; contains blood vessels that deliver oxygen and nutrients to the retina.
Retina: Light-sensitive layer of tissue at the back of the eye; receives light focused by the lens.
Optic Disk: Area where the optic nerve exits the retina; known as the blind spot due to lack of photoreceptors.
Vitreous Humor: Gel-like substance filling the eye; helps maintain its shape.
Pupil: Opening that allows light to enter the eye; size is controlled by the iris.
Iris: Colored part of the eye; regulates the amount of light that enters by controlling the size of the pupil.
Tapetum Lucidum: Iridescent layer in some animals; provides a blue-green sheen and enhances low-light vision.

Functions and Additional Information

Pupil Function: Regulates light entry into the eye for optimal vision.
Iris Function: Adjusts pupil size based on light exposure; expands or contracts to control light intake.
Choroid Function: Provides nutrients to the retina and absorbs excess light to enhance visual clarity.
Extraocular Muscles: Control the movement of the eye; important for tracking and visual focus.

Surface Structure

Cornea is the primary outer layer that is clear and refractive, critical for focusing light.
Sclera provides structural support and protection; it is durable and opaque.
Choroid layer complements functions of the retina, supporting its health and operation.

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Description

Explore the key components of the sheep eye with this flashcard quiz. Each card features a specific part of the eye along with its function, helping you understand the anatomy and physiology of vision. Perfect for biology students and anyone interested in eye dissection.