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receptors for these senses are distributed throughout body;
eg, pain, touch, temperature, and proprioception (body position)
receptors for these senses found in specific organ;
eg, taste, smell, vision, hearing, balance
detect physical movement or pressure;
eg auditory (hearing) and equilibrium (balance) receptors
glands superior and lateral to eyes that secrete tears to lubricate & cleanse the eye
fibrous outermost layer of the eye; envelops entire eye except cornea portion; "whites" of eye
highly-vascularized darkly pigmented middle layer of eyeball; absorbs excess light to prevent it from interfering with vision
condition in which aqueous humor drains improperly, accumulates in anterior chamber, elevating intraocular pressure; leads to loss of vision / blindness
center of the retina, where photoreceptors are conctrated; appears as a yellow spot on retina
pit in center of macula, where cones are highly concetrated; dead center in one's field of vision
air-filled cavity containing ossicles;
behind tympanic membrane until cochlea; connected to pharynx via eustachian tubes
3 smallest bones in body, transmit sound waves from outer ear (ear durm) to inner ear (cochlea):
"auditory tube" connecting middle ear to pharynx (throat); equilizes pressure inside middle ear with outside
hearing organ of the inner ear; contains mechanoreceptors in organ of Corti that detect sound waves
pathway of sound
ear canal → tympanic membrane → ossicles → cochlea → cochlear nerve (auditory nerve)
reduction of perception of a constant harmless stimulus;
eg, "get used to a smell"
mechanoreceptors detect physical forces that deform or move tissue (eg skin);
similar to sense of pressure
sense of body position, orientation, and location; receptors in tendons, ligaments, and muscles
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