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40 Cards in this Set
- Front
- Back
subdivisions of the membranous labyrinth
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semicircular ducts, cochlear duct, utricle and saccule,
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fluid in membranous labyrinth
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endolymph
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Hair cells in the spiral organ of corti are stimulated by
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vibrations
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hair cells in the macula of utricule and saccule are stimulated by
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gravity and linear acceleration
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hair cells in the ampullae of semicircular duct are stimulated by
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changes in rate of movement and direction
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hair cells in the ampullae of semicircular duct detect
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dynamic equilibrium
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hair cells in the macula of utricule and saccule
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static and dynamic equilibrium
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Hair cells in the spiral organ of corti are
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hearing
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where is hearing detected
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spiral organ of corti
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where is dynamic equilibrium detected
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ampullae of semicircular duct
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where is static and dynamic equilibrium detected
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macula of utricle and saccule
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color of CN IX
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white
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color of anterior column of spinal cord
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white
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color of basal nuclei
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gray
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color of thalamus
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gray
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color of hypothalamus
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gray
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color of lateral horn of spinal cord
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gray
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color of folia
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gray
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color of dorsal root ganglion
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gray
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color of nucleus of origin of CN IV
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gray
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color of superior colliculus
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gray
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color of cerebellar peduncles
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white
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color of pyramid of decussation
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white
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color of anterior rootlet
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white
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color of posterior ramus of T12
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white
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color of corpus callosum
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white
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color of arbor vitae
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white
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color of cerebral cortex
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white
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CSF Pathway
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CSF is secreted by choroid plexus in each lateral ventricle
> CSF flows through interventricular foramina into third ventricle > Choroid plexus in 3rd ventricle adds more CSF > CSF flows down cerebral aqueduct to 4th ventricle > Choroid plexus in 4th ventricle adds more CSF; fluid also can continue down the central canal of the spinal cord from the 4th ventricle > CSF flows out two lateral apertures and one median aperture > CSF fills subarachnoid spaces and bathes external surface of brain and spinal cord > At arachnoid granulations CSF is reabsorbed into venous blood of dural venous sinuses |
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vertebral canal penetration from outer to inner
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epidural space > dura mater > arachnoid > subarachnoid space > pia mater
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whats in epidural space
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filled with fat and ct
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what tissue is dura mater
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dense irregular ct
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what is arachnoid
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avascular, modified loose ct w/ weblike extensions of collagen and elastic fibers
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whats in subarachnoid space
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csf made by ependymal cells
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what is lumbar cistern
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a sub arachnoid space inferior to medullary cone
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tissue of pia mater
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collagen and a few elastic fibers
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pathway of sound
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pinna > auditory canal > tympanic membrane > ossicles: malleous > incus > stapes > oval window > perilymph in cochlea > endolymph in cochlear duct > hair cells in spiral organ of corti
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path of light to central fovea
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cornea > anterior chamber filled with aqueous fluid > pupil > posterior chamber filled with aqueous fluid > lense > posterior cavity filled with vitreous humor > central fovea
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layers of retina light passes
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nerve fiber > ganglion cells > photo receptors > pigment epithelium > choroid
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visual information pathway
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reception of photon by photoreceptor cell > ganglion cells > nerve fibers > optic nerve (ganglion cell axons) > optic chiasm (1/2 cross to other side) > optic tracts > thalamus > cerebrum
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