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AP II
Chp 9 - Senses
| Question | Answer |
|---|---|
| These often exist as indiv. cells or receptor units and are widley distributed throughout the body. | general sense organs |
| These are large and complex organs, localized grouping of specialized receptors. | special sense organs |
| Two other classifications for sense organs | encapsulated/unencapsulated and byt the type of stimuli required to activate receptors |
| What sense does photoreceptors sense? | light |
| What sense does chemoreceptors sense? | chemicals |
| What sense does pain receptors sense? | injury |
| What sense does thermoreceptors sense? | temperature change |
| What sense does mechanoreceptors sense? | movement or deforming of capsule |
| What sense does proprioceptors sense? | position of body parts or changes in muscle length or tension |
| What are these examples of: free nerve endings, meissner's corpuscles, ruffini's corpuscles, pacinian corpuscles. | general sense organs |
| What are the three layers of the eyeball? | sclera,choroid, retina |
| -tough outer coat, "white" of eye, cornea is transparent part over the iris | sclera |
| -pigmented vascular layer prevents scattering of light; front part made of ciliart muscle and iris, colored part of the eye | choroid |
| innermost layer of the eye;contains rods and cones | retina |
| -mucous membrane covering the front surface of the sclera and also lines the eyelid; kept moist by tears found in the lacrimal gland | conjunctiva |
| -transparent body behind the pupil; focuses light rays on the retina | lens |
| WHat is the pathway of light? | lightwaves-cornea-pupil-lens-retina-rods & cones-optic nerve-occipital lobe of cerebral cortex |
| What are the two types of eye fluids? | Aqueous humor and vitreous humor |
| -anterior chamber in front of the lens; water like substance | aqueous humor |
| -in the posterior chamber behind the lens; jelly like | vitreous humor |
| Which layer of the eyeball contains the rod and cones? | The innermost, retina |
| What is the point of exit for the optic nerve known as? | the blind spot |
| Where does visual interpretation occur? | in the visual cortex of the cerebrum |
| What are the functions of the ear? | hearing, equilibrium and balance |
| -more about touch | general sense organs |
| taste, smell, vision | special sense organ |
| General sense organs can be broken down into two groups, what are they? | free and encapusalted |
| What are the three divisions of the ear? | external, middle, inner |
| What part of the ear contains: auricle(pinna), external auditory canal, ends with tympanic membrane? | external |
| What is the tympanic membrane? | ear drum |
| Which part of the ear contains: ossicles, ends at oval window? | middle ear |
| What are the bones that make up the ossicles? | malleus, incus, stapes |
| What is a otitis media? | middle ear infection |
| What connects the middle ear to the throat? | eustachian tube |
| Which part of the ear houses: bony labyrinth, semicircular canals, cochlea? | inner ear |
| Where is perilymph found? | bony labyrinth |
| Where is endolymph found? | membranous labyrinth |
| Where are the cristae ampullaris found? What do they do? | semicircular canals; balance |
| What is the pathway of sound? | sound strikes eardrum, vibrates-ossicles vibrate-oval window vibrates-perliymph vibrates-endolymph vibrates-hair cells bend generating nerve impluse |
| Another word for gustatory cell? | taste buds |
| What are the 4 primary taste sensations? | sweet, sour, bitter, salty |
| Where are chemoreceptors located that are responsible for smell? | epithelial tissue in the upper part of the nasal cavity |
Created by:
erikasmith28
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