SIGHT-The eye is the organ of sight. It is made up of the eyeball and protected by the eyebrows, eyelids and eyelashes. Process of sight1.Light goes through the cornea.2.Light passes through the pupil , the opening of the iris.3.Light passes through the lens which focuses the image on the retina.4.The information in the retina travels to the brain through the optic nerve.
SMELL -The nose is the organ of smell. Thereceptors of smell are in the pituitary gland ,inside the nostrils.
HEARING The ear is the organ of hearing.It has three parts: the outer ear, the middle ear and the inner ear. -The middle ear includes the ear and the ear canal. -The middle ear includes the eardrum and the small bones.-The inner ear includes the cochlea and the auditory nerve.
Process of hearing 1.First the outer ear receives sounds.2.Then the middle ear changes sounds into vibrations. 3.Finally the inner ear changesvibrations into nerve impulses that go to the brain.
TOUCHThe skin is the organ of touch.It is made up of three layers.
TASTE The tongue is the organ of taste.The receptors of taste are in the taste buds. There are taste buds all around the tongue.