The Eye

Identify the fluid filled space between the cornea and iris. -Anterior chamber -Posterior segment -Posterior chamber -Anterior segment

Identify the structure that regulates the amount of light entering the posterior segment of the eye. -Pupil -Iris -Lens -Cornea

Identify the areas that are filled with aqueous humor. -The anterior and posterior chambers - The posterior chamber and the posterior segment -The anterior chamber and the posterior segment -The anterior and posterior segments

The iris divides the eye into the anterior and posterior segments. True or False

The pupil can adjust its size independent of the iris. True or False

Identify the parts of the fibrous layer. - Cornea and lens - Sclera and cornea - Sclera and conjunctiva - Cornea and iris

Identify the structure that allows light to first enter the eye. - Lens - Cornea - Sclera - Pupil

Name the largest portion of the fibrous layer. - Choroid - Cornea - Sclera - Conjunctiva

Which cranial nerve carries visual information from the eyeball to the brain? - Vestibulocochlear nerve - Oculomotor nerve - Olfactory nerve - Optic nerve

Only the fibrous layer can be observed in its entirety from the superficial surface of the cow eye. True or False

Identify the muscular structure that anchors the lens in place. - Ciliary body - Choroid - Suspensory ligaments - Iris

Where is the vitreous body located? - Posterior segment - Posterior chamber - Anterior segment - Anterior chamber

Identify the neural layer. - Optic nerve - Sclera - Retina - Choroid

Which of the following structures is highly vascular? - Sclera - Retina - Cornea - Choroid

Which of the following regions is known as the blind spot? - Fovea centralis - Ciliary body - Optic disc - Macula lutea

Identify the incorrect statement regarding the vitreous body. - Holds the retina against the choroid - Supports the posterior surface of the lens - Consists of a thin, watery fluid - Transmits light

The eyeball sits in the eye socket also called the _____

_____ cushions and protects the eyeball in the skull.

_____ and _____ are hairy structures that protect the eyeball from foreign objects, perspiration, and the direct rays of the sun

Modified sweat glands, called the _____, are found at the base of the hair follicles of eyelashes.

Infection in the ciliary glands is called a _____

The eyelids, or _____, shade, protect, and spread lubricant over the eyeball.

Inside the eyelid are thick sheets of connective tissue called _____ that gives form and support to the eyelids.

Embedded in each tarsal plate are _____ glands that secrete an oily substance to keep the eyelids from sticking together.

The transparent mucous membrane lining the inside of the eyelids and covering the anterior surface of the eyeball is called _____

_____is an inflammation of the conjunctiva.

The _____ is a term for structures that make and drain tears.

Included in the lacrimal apparatus are the _____that produce the tears, or _____.

The _____are six to 12 ducts that lead from the gland to the conjunctiva of the upper eyelid. It empties the tears onto the eyeball.

From the lacrimal excretory ducts, the tears pass through 2 small pores, the _____, at the medial part of the eyelids.

The tears drain through the 2 _____ which lead into the _____. This duct carries the tears into the nasal cavity.

There are 6 extrinsic muscles that are under voluntary control. They are located on the outside of the eyeball. They are grouped according to their movement.

3 layers of the eyeball include....