parts for the sheep eye dissection
Terms in this set (28)
thin black/brown film covering the eye.
thin layer of tissue that is part of the middle layer of the wall of the eye, between the sclera (white outer layer of the eye) and the retina (the inner layer of nerve tissue at the back of the eye). The choroid is filled with blood vessels that bring oxygen and nutrients to the eye.
black with "spokes"
anchors suspensory ligaments that flatten the lens for focusing your vision
structure in the eye that releases a clear liquid in the eye. This liquid is called the aqueous humor. The ciliary body also contains the ciliary muscle. This muscle changes the shape of the lens when your eyes focus on something.
clear "disk" covering the iris and pupil
protects the front of the eye
controls and focuses the entry of light into the eye.
the colored part of the eye.
a thin, circular structure in the eye, responsible for controlling the diameter and size of the pupil and thus the amount of light reaching the retina.
the point where the optic nerve enters the retina. Blind spot.
represents the beginning of the optic nerve and is the point where the axons of retinal ganglion cells come together. also the entry point for the major blood vessels that supply the retina.
the cranial nerve that serves the retina, appears as a white line or stem off center in the back of the eye.
transfer visual information from the retina to the vision centers of the brain via electrical impulses. made of ganglionic cells or nerve cells. it consists of over one million nerve fibers.
the opening through which light enters the eye.
sphinctor muscles determine how large your pupil is. regulate the amount of light that enters the eye.
smaller, less light in
larger, more light in
thin, translucent film covering the eye, beneath the choroid.
thin layer of tissue that lines the back of the eye on the inside. It is located near the optic nerve. receives light that the lens has focused, convert the light into neural signals, and send these signals on to the brain for visual recognition.
Tough, white outer coat of the eyeball
white part of the eye, thick, tough, protects the eye. The transparent potion of it is known as the cornea
Iridescent layer, blue green iridescent sheen on the choroid
which reflects light and causes the eyes to shine at night when illuminated.
the clear colorless transparent jelly that fills the posterior chamber of the eyeball
gel like substance in the posterior chamber, gives structure to the eye and maintains its shape.
canal of schlemm
drains fluid from the eye.
circular lymphatic-like vessel in the eye that collects aqueous humor from the anterior chamber and delivers it into the episcleral blood vessels via aqueous veins.
the junction between the retina and the ciliary body. It is the area where the retina transitions from a non-photosensitive area to a multi-layered photosensitive region.
by changing shape, functions to change the focal distance of the eye so that it can focus on objects at various distances, thus allowing a sharp real image of the object of interest to be formed on the retina.
1) conjunctiva, eye-lid 2) cornea
3) sclera 4) fatty tissue
1) optic nerve 2) fatty tissue 3) extrinsic musscle
1) cornea 2) sclera
1) optic nerve 2) sclera 3) extrinsic muscles
1) cornea 2) extrinsic muscle
3) optic nerve 4) sclera
1) vitreous humor 2) retina
1) sclera 2) choroid 3) retina
1) suspensory ligamanets of the ciliary body 2) lens
1) ciliary body 2) lens
1) iris 2) pupil
1) iris 2) pupil
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