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Sensory organs
sense organs
| Question | Answer |
|---|---|
| Sensory receptors detect _______ and generate________ | stimuli, impulses |
| Bundles of fibers in the white matter of the spinal cord are ______ ________ | sensory tracts |
| ____________ respond to phusical movement and detect sound | Mechanoreceptors |
| ___________ are a type of mechanoreceptor in muscles and joints | Proprioceptors |
| A type of receptor that responds to temperature is ___________ | thermoreceptors |
| Nocietors detect _______ ________ and give sense of pain | tissue damage |
| This receptor detects light | photoreceptor |
| Name the five charactericts of sensations, | Type, projections, intensity, adaptation, contrast. |
| _________ becoming less aware of continuing stimulation | adaptation |
| Effect of a previous or simultaneous sensation on a current sensation is called _________ | contrast |
| _________ is determined by the number of receptors stimulated and the amound of stimulation in each | Intensity |
| Which sensation is "felt" in the cerebral cortex | projections |
| Two cavaties of the retina are _____cavity and _______ cavity | posterior, anterior |
| The anterior cavity is divided into _____ chambers | 2 |
| _______ chamber of the ______ cavity lies between the iris and cornea | anterior, anterior |
| The chamber betweeen the iris and the lens is the ________ ________ | posterior chamber |
| The _______ _______is in the anterior cavity of the retina | aqueous humor |
| Binocular vision allows for ______ _______ | depth perception |
| Bending of the light rays passing through the eye is called ________ | refraction |
| The canal of Schlemm is also known as ______ _____ _______ | scleral venous sinus |
| Posterior cavity is located between the lense and retina and also called | vitreous chamber |
| The vitreous humor, also known as vitreous body, is made of a ________ substance | semisolid |
| What is the opening where the optic nerve exits the eye | optic disc |
| The "blind spot" has no | visual receptors |
| The ciliary body/muscle is a circular muscle that surrounds and connected to the lens by _________ | ligaments |
| Anterior to the lens is the _______ also known as the colored part of the eye | iris |
| ________, contraction of the radial fibers let in more light | Dilation |
| Another name for radial fibers is | sympathetic |
| Constriction is contraction of the _______ fibers that block light when too bright | circular |
| Give another name for the circular fivers of the pupil | parasympathetic |
| What part of the eye lines 2/3 of the posterior of the eye | retina |
| ______ of the retina detect wavelengths of visible light | rods |
| These are most abundant in the center of the retina | cones |
| _______ centralis are small depressions in the macula | Fovea |
| Less melanin appears as white. True/False | False. it appears as blue |
| Tears are released by the ________ ducts and blinking spreads them | lacrimal |
| Tears contain 20%,10%, or 1% NaCI and lysozyme | 1% |
| Name four of the six muscles of the eyeball | superior oblique, superior rectus, medial rectus, lateral rectus, inferior rectus, inferior oblique |
| The _____ and ______ oblique rotate the eyeball side to side. | superior, inferior |
| The ______, _______,_______,_______ rectus muscles move the eyeball up and down. | superior, medial, lateral, inferior |
| How many layers are in the eye | two |
| What is the thickest part of the eye | sclera/ white part |
| The white part of the eye is made of | fiberous connective tissue |
| Parts of the outer layer of the eye are | sclera, cornea |
| The chorid layer of the eyeball contains most of the _______ _______ | blood vessels |
| Vascular tunic is also known as the | middle layer of the eyeball |
| Another name for the Fiberous tunic of the eyeball is | outer layer |
| Superior and lateral to the eye with in the orbit lies the _______ _______ | lacrimal glands |
| The eyelids are controlled by _______ _______ | skeletal muscles |
| A thin membrane that lines the eyelid and covers the sclera is known as | conjunctiva |
| Which part of the inner ear is responsible for dynamic equilibrium | semicircular canals |
| _________ is controlled by the cerebellum and midbrain | equilibrium |
| Each of the three fluid filled semicircular canals is stimulated by different movements of the head. True/False | True |
| A bulb like area at the end of each canal is called _______ | ampulla |
| Name the two sense organs inside the vestibule of the ear | utricle and saccule |
| Inside each ampulla are sterocilia (hair cells) topped by the ________ | cupula |
| The cupula floats in the __________ that fills the semicircular canals | endolymph |
| Inside the inner ear is the _______ for hearing and the _______ for balance | cochlea, vestibule |
| The cochlea is a stirrup shaped structure for hearing. True/False | False. it is snail shaped |
| Parts of the outer include the ______ and _____ _____ | auricle, ear canal |
| The _______ _____ contains the ossicles and is drained by the eustachian tubes | middle ear |
| Three parts of the auditory ossicles are | malleus, incus, stapes |
| The stapes looks like a ______ it transfers and amplifies sound | stirrup |
| The auditory tubes extend from the ______ _____to the nasopharaynx | middle ear |
| Parts of the middle ear include: | eardrum, aduitory ossicles, auditory tubes, and otitis media |
| _______ results when chemicals come in contact with tastebuds | Gustation |
| Name the 4 types of papillae on the tongue are | vallate, foliate, filiform, fungiform |
| Taste buds are enhanced by _______ | smell |
| Olfactory receptors detect vaproized chemicals in the _____ ______ cavity | upper |
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sunshine63
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