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Free Nerve Endings (naked nerve endings)
Pain, crude touch, tempeture, itch, and tickle.
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Tactile Corpuscle (Meissner)
Fine touch and low freqency
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Bulbous Corpuscle (Ruffini)
Touch and pressure
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Lamellar Corpuscle (Paccini)
Pressure and high frequency vibration
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Bulboid Corpuscle (Krause end bulbs)
Touch
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Golgi tendon organs
Proprioception (sense of muscle tension)
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Muscle spindles
Propriception (sense of muscle length)
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Three Layers of the eyeball?
Sclera, choroid, and retina
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Conjunctiva
mucous membrane lines the eyelid and covers the sclera
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Lacrimal gland
where tears are formed
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Choroid
- Middle part of the eye.
- Two involuntary muscles: iris, ciliary muscle
- Pupil: lets light in
- Lens: behind the pupil
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Presbyopia
Oldsightedness
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Visual acuity
Clearness or sharpness of visual perception
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Retina
- Innermost layer of the eye
- Conains rods and cones
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Aqueous humor
watery fluid in front of the lens
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Vitreous humor
jellylike fluid behind the lens
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Refraction
light passes from cornea, aqueous humor, lens, and vitreous humor
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External Ear
- Has auricle and external auditory canal
- Ends at the ear drum
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Ceruminous glands
Produces wax
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Middle ear bones?
Ossicles, malleus, and incus and stapes
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Auditory or eustachian tubes
connects the throat with middle ear
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Inner ear has what parts?
Vestibule, semicircular canals, and cochlea
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