Term
| Fibers arise from olfactory epithelium and run through cribiform plate of ethmoid bone to synaspse in olfactory bulbs |
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Definition
| Purely sensory carrries afferent impluses associated with sense of smell |
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Term
| Fibers arise from retina of eye to form the optic nerve and pass through optic canal of orbit. Fibers partially cross over at the optic chiasma and continue on to the thalamus as the optic tracts. Final fibers of this pathway travel from the thalamus to the visual cortex as the optic radiation |
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Definition
| Purely sensory carries afferent impluses associated with vision |
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Term
| Oculomotor fibers emerge from dorsal midbrain and course ventrally to enter the orbit they exit from skull via superior orbital fissue |
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Definition
| Primarily motor somatic mot fibers to inferior oblique and superior inferior and medial rectus muscles of which direct eyeball and to levator |
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Term
| Trochlear fibers emerge from midbrain and exit from skull via superior orbital fissue |
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Definition
| primary motor provides somatic motor fibers to superior oblique muscle that moves eyeball |
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Term
| Trigeminal Fibers emerge from pons and from three divisions which exit separately from skull: mandibular division through foramen ovalein sphenoid bone, maxiallary division via foramen rotundum in sphenoid bone, and opthalmic division through superior orbital fissure of eye socket |
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Definition
| mixed major sensory nerve of face conducts sensory impluses from skin of face and anterior scalp from mucosae of mouth and nose, and from surface of eyes, mandiublar division also contains motor fibers that innervate muscles of mastication and muscles of floor of mouth |
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Term
| abducens fibers leave inferior pons and exit from skull via superiro orbital fissure to run to eye |
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Definition
| carries somatic motor fibers to lateral rectus muscle that moves the eyeball |
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Term
| facial fibers leave pons and travel through temporal bone via internal acoustic meatus, exiting via sytlomastoid foramen to reach the face |
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Definition
| mixed supplies somatic motor fibers to muscles of facial expression and parasympathetic motor fibers to lacrimal and salivary glands carries sensory fibers from taste receptor of anterior portion of tongue |
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Term
Vestibulocochlear fibers run from inner-ear equilibrium and hearing apparatus, house in temporal bones, through internal acoustic meatus to enter pons |
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Definition
| Purely sensory vestibular branch transmits impluses associated with sense of equilibrium from vestibular apparatus and semicircular cana;s: cochlear branch transmits impluses associated with hearing from cochlea |
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Term
| Glossopharyngeal fibers emerge from medulla and leave skill via jugular foramen to run to throat |
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Definition
| mixed somatic motor fibers serve pharyngeal muscles and parasympathetic motor fibers serve salivry glands; sensory fibers carry impluses from pharynx, tonils, posterior tongue (taste buds) and from chemoreceptors and pressure receptors of carotid artery |
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Term
| Vagus- ibers emerge from medulla and pass through jugular foramen descned through neck region into thorax and abdomen |
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Definition
| Mixed fibers carry somatic motor impluses to pharnyx and larnxy and sensory fibers from same structures very large pportion is composed of parasympathetic motor fibers which supply heart and smooth muscles of abdominal visceral orgams transmits sensory impluses from viscera |
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Term
| Accessory fibers arise from the superior aspect of spinal cord, enter the skull, and travel through jugular foramen to reach muscles of neck and back |
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Definition
| mixed (but primarily motor in function) provides somatic motor fibers to sternocleidomastoid and trapezius muscles and to muscles of soft palate, pharny adn larynx spinal and medullary fibers respectively |
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Term
| Hypoglossal fibers arise form edulla and exit from skull via hypoglossal canal to travel to tongue |
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Definition
| mixed but primarily motor in function carries somatic motor fibers to muscles of tongue |
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Term
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Definition
| Neuromuscular junctions, most synapses of autonomic nervous system, retina and many parts of the brain, excites skeletal muscle, inhibits cardiace musclem and has excitatory or inhibitory effects on smooth muscle and glands depending on location |
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Term
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Definition
| Cerebral cortex and brainstem accounts for about 75% of all excitatory synaotic transmission in the brain involved in learned and memory |
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Term
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Definition
| Spinal cordl effects similar to those of glutamate |
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Term
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Definition
| inhibitory neurons of the brain, and spinal cord, and retina, most common inhibitory neurotransmitter in the spinal cord |
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Term
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Definition
| Thalamus,hypothalamus, cerebellum, occiptal lobes of cerebrum, and retina; the most common inhibitory neurotransmitter in the brain |
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Term
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Definition
| Sympathetic nervous system, cerebral cortex, hypothlamus, brainstem,cerebellm, and spinal cord involved in dreaming, waking and mood, excited cardiac muscle can excite or inhibit smooth muscle and glands depending on location |
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Term
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Definition
| Hypothalamus, thalamus, spinal cord, and adrenal medulla, effects similar to those of norepinephine |
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Term
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Definition
| Hypothalamus,limbic system, cerebral cortex, and retina: highly concentrated in substantia nigra of midbrain involved in elevation of mood and control of skeletal muscles |
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Term
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Definition
| Hypothalamus,limbic system, cerebellum, retina and spinal cord, also secreted by blood platelets and intestinal cells; involved in sleepiness, alertness, thermoregulation, and mood |
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Term
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Definition
| Hypothalamus; also potent vasodialator released by mast cells of connective tissue and basophils of the blood |
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Term
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Definition
| Basal nuclei, midbrain, hypothalamus, cerebral cortex, small intestine, and pain-receptor neurons; mediates pain transmission |
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Term
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Definition
| Hypothalamus, limbic system, pituitary, pain pathways of spinal cord, and nerve endings of digestive tract; act as analgesics(pain releievers by) by inhibiting substance Pl inhibit intestinal motility secretion increases sharply in women in labor |
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Term
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Definition
| Digestive tract, spinal cord, and many parts of the brain also secreted as a hormone by the pituitaty suppresses pain, reduces perception of fatigue and may produce runners high in athletes |
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Term
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Definition
| Cerebral cortex and small intestine suppresses appetite |
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Term
| Ascending-Gracile fasciculus |
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Definition
| In medulla sensations of limb and trunk position and movement deep touch visceral pain and vibrations below level T6 |
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Term
| Asecending-Cuneate Fasciculus |
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Definition
| In Medulla Same as gracile fasiculus from level T6 UP |
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Term
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Definition
| In spinal cord sensations of light touch, tickl, itch, temperature, and pain, and pressure |
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Term
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Definition
| Sensation of pain from tissue injury |
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Term
| ascending-Posterior spinocerebellar |
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Definition
| feedback from muscles (proprioception) |
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Term
| Ascending Anterior spinocerebellar |
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Definition
| in spinal cord Same as posterior spinocerebellar |
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Term
| Descending-Lateral corticospinal |
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Definition
| in medulla fine control of limbs |
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Term
| Descending Anterior Corticospinal |
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Definition
| In spinal cord fine control of limbs |
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Term
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Definition
| In midbrain relfexive head turning in response to visual and auditory stimuli |
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Term
| Descending Lateral reticulospinal |
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Definition
| balance and posturel regulation of awareness of pain |
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Term
| Descending Medial Reticulospinal |
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Definition
| Same as lateral reticulospinal |
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Term
| Descending Lateral vestivulospinal |
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Definition
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Term
| Descending Medial vestibulospinal |
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Definition
| IN medulla control of head position |
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