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98 Cards in this Set
- Front
- Back
Trigeminal |
Sensations on face and chewing |
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Abducens |
Crossed eyes |
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Facial nerve |
Anterior taste buds, salivary and lacrimal glands, dysfunction = bells palsy |
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Vestibular cochlear |
Hearing and balance |
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Glossopharyngeal |
Back taste buds, swallowing muscles, parotid gland (sour) |
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Vagus |
Gut feelings, heart, larynx |
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Acessory |
Neck muscles |
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Hyperglossal |
Tongue muscles |
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Ventral roots |
Motor |
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Dorsal roots |
Sensory |
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Where do spinal nerves merge |
Intervertebral foramen |
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Rami |
Branched nerves after intervertebral foramen |
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Posterior ramus |
Slow twitch, smaller innervate back |
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Anterior ramus |
Larger, innervate organs and muscles |
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Rami comminicantes |
Interconnected through sympathetic chain |
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Dermatome |
Each spinal nerve carry sensation in band on body |
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Phrenic nerve |
Innervate diaphragm |
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4 plexuses |
Cervical, brachial, lumbar, sacral |
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Mechanoreceptors |
Change in pressure or tension |
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Chemoreceptors |
Change in chemicals |
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Exteroreceptors |
Cutaneous (general) receptors |
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Special sense receptor |
Complex sensory organs |
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Intereceptors |
Chemical /temp change in organs (blood becomes acidic when you hold breath) |
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Proprioceptor |
Senses movement and position |
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Encapsulated spinal nerve |
Mechanoreceptors |
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Unencapsulated spinal nerves |
Temp, pain, light touch |
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Transduction |
Converting stimulus to AP |
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Basal cells |
Olfactory stem cells grow neurons |
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1st order of olfactory |
Receptor neurons |
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2nd order of olfactory |
Mitral cells modify and relay signals to brain |
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3rd order in olfactory pathway |
Olfactory cortex interprets information |
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Which papillae doesn't taste |
Filiform |
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Salty receptor |
Detects metal ions |
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Sour receptors |
Acids |
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Sweet receptor |
Sugar, alcohol, amino acids |
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Bitter receptors |
Alkaloids and nonalkaloids |
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Umami |
Amino acid glutamate |
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Sweet, bitter, umami |
6 coupled protein cascade |
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Depolarization |
Triggers influx of calcium |
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1st order of gustation |
Cranial nerve from tongue to salivary nucleus of medulla |
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2nd order of gustation |
Medulla to thalamus |
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3rd order of gustation |
Thalamus to gustatory cortex in insula |
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4th order of gustation |
Appreciation of taste in hypothalamus and limbic system |
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Fibrous layers of eyeball |
Sclera and cornea |
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Vascular layer of eyeball |
Choroid, ciliary body, iris |
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Ciliary body |
Controls lens shape |
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Neural layer |
Retina |
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Posterior cavity of eye |
Vitreous humor and haploid canal |
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Hayloid canal |
Fetal structure |
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Scleral venous sinus |
Aqueous humor drains to here |
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Imbalance of aqueous humor production |
Glaucoma |
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What happens to ciliary muscles and the lens when looking at something far |
Ciliary body relaxed lens pulled flat |
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What senses darkness |
Photoreceptors |
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Retina function in low light |
Rods are sensitive cones inactive |
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Retina function in bright light |
Rods bleached and cones perceive color |
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What process perceives detail |
Fovea centralis |
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Thalamus |
Sorted unnecessary stuff |
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1st step of visual perception |
Ganglion to thalamus |
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2nd step of visual perception |
Thalamus to occipital lobe |
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3rd step of visual perception |
Occipital lobe to interpretation areas |
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1st step of tracking objects |
Ganglion to corpora quadrequima |
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2nd step of tracking objects |
Signals to spinal cord/brain for eye and head movement |
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Inner ear |
Perception |
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Perception of linear acceleration |
Uttrice and sacule of vestibule |
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Scala vestibuli |
Starts at oval window |
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Scala tympani |
Ends at round window |
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2 boney labrynths |
Scala vestibuli and Scala tympani |
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What are boney labyrinths filled with |
Perilymph |
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Membrane labyrinth |
Membranous sacs in boney labyrinths |
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What are membranous sacs filled with |
Endolymph |
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Scala media |
Cochlear duct |
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Steps of hearing |
Sound vibrates tympanic membrane, ossicles amplify vibrations, stapes pushes oval window, (depends on audibility), pressure excited round window |
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What happens when a sound is below your frequency |
Travels but doesn't excite hair cells |
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In hearing range |
Vibrates through cochlear duct, vibrates basalar membrane |
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First step of transduction of hearing |
Basilar membrane moves toward tectoral membrane (bends cilia toward tallest cillia) |
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2nd step of tranduction of hearing |
Bending cilia opens k channels, depolarizes cell and releases neurotranamitter |
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3rd step of transduction for hearing |
Ap in vestibulocochlear nerve |
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Pitch = |
Frequency, where wave hits hair cell |
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Loudness = |
Amplitude, rate of ap from hair cells |
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1st step in auditory neural pathway |
Receptor to medulla |
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2nd step in auditory neural pathway |
To olivary nuclei in medulla |
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3rd step in auditory neural pathway |
Medulla to inferior colliculus |
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4th step in auditory neural pathway |
Inferior colliculus to thalamus |
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5th step in auditory neural pathway |
Thalamus to auditory cortex |
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2 sensory regions of the vestibule |
Sacule and utricle |
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Sacule |
Gravity |
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Utricle |
Horizontal position |
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Function of vestibule |
Send continuous ap (tonic) |
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Ampulla |
Enlarged area at base of semicircular canal |
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Crista ampalaris |
Part of semicircular canal that consists of Hair cells and a flexible gel called capula |
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1st Step of Function of semicircular canals |
Endolyphs inertia causes it to lag behind moving head |
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2nd Step of Function of semicircular canals |
Endolyphs bends capula and stereocilia |
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3rd Step of Function of semicircular canals |
One ear depolarizes and The opposite hyperpolarizes |
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4th Step of Function of semicircular canals |
Endolyph settles and system detects movement |
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Nystagmus |
Reflex response of eyes, neck, and head to vestibular receptors |
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1st step of Equilibrium pathway |
Receptors to cerebellum to brainstem |
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2nd step of Equilibrium pathway |
Brain stem to neurons in cns |
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3rd step of Equilibrium pathway |
Cns to motor cranial nerves |