Sensory receptors - a nerve ending that sends signals to the. central nervous system when it is stimulated., Sense organ - refers the the entire sensory apparatus (eye, ear, etc.),, Three types of sensory information - taste, touch, auditory, Five classifications of sensory receptors - Receptors of smell,Receptors of taste,Receptors of balance.Receptors of hearing.Receptors of vision., five special senses - Sight, Sound, Smell, Taste, and Touch, location of taste receptors - tongue , how does the sensation of taste occur? - when a substance reacts chemically with taste receptor cells located on taste buds or papillae, location of smell receptors - nasal cavity , how does the sensation of smell occur? - Each olfactory neuron has one odor receptor., how does hearing occur? - Sound waves enter the outer ear and travel through a narrow passageway called the ear canal, which leads to the eardrum., how does vision occur? - When light hits the retina (a light-sensitive layer of tissue at the back of the eye), special cells called photoreceptors turn the light into electrical signals., The structure and function of the retina  - The retina is a layer of photoreceptors cells and glial cells within the eye that captures incoming photons and transmits them along neuronal pathways as both electrical and chemical signals for the brain to perceive a visual picture., location of rods  - ods are present at high density throughout most of the retina,, location of cones - cones are present at a low density throughout the retina, with a sharp peak in the center of the fovea., Describe the anatomy of the eye and its accessory structures. - The accessory structures of the eye include the eyebrows, eyelids, conjunctiva, lacrimal glands or apparatus, and the extrinsic eye muscles or extra-ocular muscles.,

-Sensory review -

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