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senses
A&P Corbit
| Question | Answer |
|---|---|
| Projection= | sensation seems to come from the area where receptors were stimulated, but actually 'sensed' in the brain |
| Intensity= | some sensations are felt to a greater degree than others |
| Contrast= | effect of a previous sensation on a current sensation |
| Adaptation= | becoming unaware of a stimulus |
| Referred pain = | originates in an internal organ and is felt in a cutaneous area (such as a patient having a heartattack and pain is felt in the arm) |
| What is the purpose of eyelashes | help prevent dust and particles out of the eyes |
| Lacrimal = | tears |
| Tears contain | lysozyme which help prevent infections |
| Tears are made up mainly of | water and salt |
| How many extrinsic muscles are attached to the outer surface of each eye | 6 |
| Sclera= | white of the eye |
| Cornea = | 1st part of the eye that refracts light. Anterior portion of the sclera |
| Conjunctiva = | membrane that lines the eyelids & covers part of the outer surface of the eyeball |
| The lens changes shape to allow for | accommodation |
| The shape of the lens is changed by the | ciliary muscle |
| The "colored part" of the eye is the | iris |
| The rounded opening in the iris is the | pupil |
| PERRLA | pupils equal regular react to light and accommodation |
| The inner layer of the eye is the | retina |
| Rods respond to | light |
| cones respond to | color |
| Optic disk is known as your | blind spot |
| Define night blindness and one of the major causes | inability to see in dim light; lack of vitamin A |
| Define fovea | a point of greatest visual acuity |
| Where is the fovea located | macula |
| In macular degeneration, the patient loses what part of the eyesight | central vision |
| Opacity of the lens is | a cataract |
| Is there a medical treatment for a cataract? | no |
| Removal of the cataract may restore useful vision. This involves removal of the | lens |
| IOL= | Intraocular lens |
| IOP= | Intraocular pressure |
| Glaucoma is due to increased ... | intraocular pressure |
| myopia= | near sightedness |
| hyperopia= | far sightedness |
| astigmatism= | irregular curvature of the lens or cornea |
| presbyopia= | old sightedness after 40 |
| Strabismus= | crossed eyes |
| Amblyopia= | lazy eye |
| Emmetropia= | normal vision |
| hemianopia= | half vision; may been seen in patients who have had a CVA |
| contains receptors for hearing and equilibrium | ear |
| Outer (external) ear consists of the | pinna and the external auditory canal (or auricle---the part we usually call our ear) |
| What is at the end of the external auditory canal | tympanic membrane, which vibrates when sound strikes it |
| Ceruminous glands secrete | cerumen (medical term for ear wax) |
| A middle ear infections is known as | otitis media |
| What connects the middle ear cavity with the throat (pharynx) | Eustachian tube |
| What is the purpose of the Eustachian tube | to equalize the pressure within the ear (on both sides of the tympanic membrane) |
| What is within the cochlea | Organ of Corti |
| The Organ of Corti is known as | organ of hearing |
| The inner ear contains the | equilibrium apparatus and the cochlea |
| Utricle and saccule - | contains hair cells; gravity pulls and bends as the position of the head changes; so, the help with equilibrium |
| How many semicircular canals | 3 |
| semicircular canels detect motion and also | maintain equilibrium |
| The utricle and saccule provide information about.... | the position of the body rest |
| Semicircular canals provide information about... | the body in motion |
| Sound waves are blocked. May be temporary or permanent. What type of deafness is this | Conductive |
| Which type of deafness is often due to listening to excessively loud music | Sensory neural |
| presbycusis= | |
| tinnitus = | ringing of the ears |
| vertigo= | dizziness |
| syncope= | fainting |
| olfaction= | sense of smell |
| gustation= | sense of taste |
| Where are the sweet taste buds found | tip of the tongue |
| Where are the sour tastebuds found | side of the tongue |
| Where are the bitter taste buds found | back of the tongue |
| Where are the salty taste buds found | just back from the tip of the tongue |
| Hunger and thirst are visceral (internal) sensations meaning | triggered by internal changes |
| The eyes do not work together because muscles do not coordinate in | strabismus |
| The process of bending, which makes it possiable for light from a large area to be focused on a small surface is known as | refraction |
| Injury or infection of the cornea may cause scar formation. Light rays cannot pass through the scar because there is now an area of | opacity |
| The secreation of tears is called | lacrimation |
Created by:
jhowe2323
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