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Senses Quiz
| Question | Answer |
|---|---|
| what are special senses | vision, hearing, taste, smell |
| what is a general sense | touch |
| what is a general sensory pathway | only 3 neurons involved |
| what is a special sensory pathway | more than 3 neurons involved |
| photoreceptors | respond to light |
| nociceptors | respond from chemicals from damaged tissue (pain) |
| thermoceptors | respond to changes in temp |
| chemoreceptors | respond to concentrations of chemicals, must be dissolved in fluid |
| mechanoreceptors | respond to mechanical forces |
| different kinds of mechanical forces | proprioceptors, baroreceptors, stretch receptors |
| proprioreceptors | changes in tension in the muscles and tendons, help maintain equilibrium and spacial awareness |
| baroreceptors | pressure |
| stretch receptors | sense changes in length of muscles, EX: muscle spindle fibers and golgi tendon organs |
| referred pain | think heart attack, pain felt in a part of the body other than its actual source |
| how many accessory structures of the eye | 3 |
| how many layers of eyelid | 4 |
| layers of eyelid | skin, muscle (orbicularis oculi), connective tissue, conjunctiva (outer to inner) |
| conjunctiva | folds back to cover eye's anterior surface, if inflamed, conjunctivitis/pink eye |
| levator papilae superioris | smooth muscle that holds up eyelid when awake |
| lacrimal apparatus | has the lacrimal gland, which produces tears |
| what do the superior and inferior canaliculi do | drain tears from medial corner of eye |
| pathway of drained tears | canaliculi, lacrimal sac in lacrimal bone, nasolacrimal duct, nasal cavity |
| extrensic muscles of the eyes | lateral rectus, superior rectus, inferior rectus, medial rectus, inferior oblique, superior oblique |
| lateral rectus | abducens, lateral mvmt |
| superior rectus | oculomotor, superior mvmt |
| inferior rectus | oculomotor, inferior mvmt |
| medial rectus | oculomotor, medial mvmt |
| inferior oblique | oculomotor, superior and lateral mvmt |
| superior oblique | trochlear, inferior and lateral mvmt |
| 3 layers of the walls of the eye | outer fibrous, middle vascular, inner nervous |
| fibrous has _____ structures | 2 |
| structures of the fibrous | sclera (whites of the eyes), and cornea |
| sclera | majority of the fibrous tunic, mostly posterior, some anterior |
| cornea | bulges out, anterior, no bv |
| ________ structures in the vascular layer | many |
| choroid | lines inner sclera and is dark brown |
| ciliary body | smooth muscle, anterior part of choroid, attaches to lens w suspensory ligaments, muscle contraction changes lens thickness. |
| iris | colored part of the eye (pigments) suspended b/w cornea and lens w smooth muscle fibers |
| opening in the center of iris | pupil |
| how does pupil regulate light uptake | constricting and dialating the hole |
| iris contains ______ sympathetic muscle | dialator pupillae muscle (radial fibers), dim light SYMPATHETIC response |
| iris contains ________ parasympathetic muscle | constrictor pupillae muscle (constrictor pupullae) muscle, bright light, parasympathetic |
| lens | posterior to iris/pupil, transparent, avascular, uses suspensory ligaments (like ciliary body) |
| changing the thickness of lens | accommodation thru ciliary body contraction changing tension on ligaments |
| olfactory organ | high in the nasal cavity |
| olfactory receptors are what type of receptor | chemo |
| where do odor mcs dissolve | in the mucous of the nasal cavity |
| olfactory receptor cells | w olfactory hairs/cilia is simulated when you smell |
| olfactory receptor cells send a | action potential to the olfactory bulb |
| what is olfactory bulb | part of the brain, inside cranial cavity |
| where does the olfactory nerve pass thru | cribform plate (ethmoid bone) |
| where do the olfactory impulses go | temporal lobe, limbic system |
| where are gustatory cells located | beneath the tongue surface |
| how does food get dissolved | saliva, which stimulates chemoreceptors |
| how do taste cells respond | send signal to insula thru facial, glossopharyngeal and vagas nerve (all participate in TASTE) |
Created by:
kavyasur