What are sensory organs and their functions

Taste buds on your tongue contain chemoreceptors that work in a similar fashion to the chemoreceptors in the nasal cavity. The olfactory bulb is directly attached to the cerebral cortex of your brain. Melanocytes are located in the epidermis. The anterior nasal spine is the thin projection of bone at the midline on the lower nasal margin, holding the cartilaginous center of the nose. The ciliary muscle changes the shape of the lens to adjust for far or near vision.

The sense organs — eyes, ears, tongue, skin, and nose — help to protect the body.

what are sensory organs and their functions

The skin is not the only tissue in the body to have receptors, however. As with all misconceptions, this idea is wrong, too. The skin's color is created by special cells called melanocytes, which produce the pigment melanin.

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The chemicals bind to the cilia, which generate a nerve impulse that is carried through the olfactory cell, into the olfactory nerve fiber, up to the olfactory bulb and to your brain. When the cilia move, the cells create an impulse that is sent through the cochlea to the eighth cranial nerve, which carries the impulse to the brain. To maintain equilibrium, the ear must detect movement.

what are sensory organs and their functions

This carries the information to the occipital lobe of the brain where they are interpreted. There are three types of cones: Behind the lens of the eye is the vitreous body , which is filled with a gelatinous material called vitreous humor. The skin is the largest organ of the body, with a total area of about 20 square feet. Behind the pupil is an anterior chamber.

The cones work best in bright light.

what are sensory organs and their functions

The olfactory cells are chemoreceptors, which means the olfactory cells have protein receptors that can detect subtle differences in chemicals. Special receptors include chemoreceptors chemical receptors found in the mouth and nose, photoreceptors light receptors found in the eyes, and mechanoreceptors found in the ears.

The little bumps on your tongue are called papillae, and the taste buds actually lie down in the grooves between each papilla. The retina contains photoreceptors , which detect light. The senses of smell and taste work closely together. The retinal pigment epithelium, choroid and sclera are three more layers. Resembles the lens of a camera and focuses the light, changing shape as it takes in light reflected from objects near and far.

The Five Sense Organs in Human Beings

This leads to the eardrum. This membrane vibrates and along with the three tiny bones in the middle ear, the hammer, anvil and stirrup, and sends the stiumuli to the cochlea. It also helops us distinguish different smells in that air.