Sense Organs and their parts/functions
Rod
(Eye/Retina)
Cone
(Eye/Retina) are responsible for color vision. There are three types of these, each containing a substance that reacts to light of a different color, one set for red, one for green, and one for violet. These are the primary colors in light, which, when mixed together, give white. White light stimulates all three sets of color cells; any other color stimulates one or two.
Ciliary Muscle
(eye)
Fovea
(eye)
Pupil
(eye)
Sciera
(eye)
Suspensary Ligament
(eye)
The refraction or bending of light rays so that they focus on the retina and can thus be transmitted to the optic nerve is accomplished by
(eye) 3 (the aqueous humor, a watery substance between the cornea and lens)
Iris
(eye) Behind the cornea and in front of the lens is the iris, the circular pigmented band around the pupil. The iris works much like the diaphragm in a camera, widening or narrowing the pupil to adjust to different light conditions.
The process of accommodation
(eye) Done by the Lens to focus. This means that when the eye sees something in the distance, muscles pull the lens, stretching it until it is thin and almost flat, so that the light rays are only slightly bent as they pass through it. When the object is close, the muscles relax and the elastic lens becomes thicker, bending the light rays and focusing them on the retina.
lacrimal duct
(eye) Tears from this constantly wash the eye to remove foreign objects
Cones and Rods
(eye) They cover the full range of adaptation to light
Lens
(eye) a crystalline structure just behind the iris; and the vitreous humor
vitreous humor
(eye) a jelly-like substance filling the space between the lens and the retina
Retina
(eye) contains rods and cones, which are specialized cells that are sensitive to light.
eye lashes
(eye) help protect the front of the eye.
eye lids
(eye) help protect the front of the eye.
Cornea
(eye) is the clear transparent layer on the front of the eyeball; it is a continuation of the sclera
Choroid
(eye) is the middle layer and contains blood vessels.
Conjunctival sac
(eye) sac covers the front of the eyeball and lines the upper and lower eyelids
Optic Nerve
(eye) which transmits the nerve impulses from the retina to the visual center of the brain, contains nerve fibers from the many nerve cells in the retina. The small spot where it leaves the retina does not have any light-sensitive cells, and is called the blind spot.
Sclera
(eye)the white of the eye, the cornea is an extinction of this the tough outer coat that helps protect the delicate mechanism of the eye.
Ears
Function- Hearing Parts-
Eye
Function- Sight Parts- Iris, Cornea, Conjunctival sac, pupil, lens, Optic Nerve, Fovea, Retina, Sciera, Suspensary ligament, Ciliary Muscel, sclera, Choroid, aqueous humor, vitreous humor
Nose
Function- Smell Parts-
Tongue
Function- Tasting Parts-
Skin
Function- Touch/Felling Parts-
Brain
Parts
Human beings have this type of vision
stereoscopic vision, the ability to judge distances. Because the eyes are set apart, each eye sees farther around an object on its own side than does the other. The brain superimposes the two slightly different images and judges distances from the composite image.
