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P1 PHAR 7456
Physiology - Neurophysiology Exam 04 Part 02
| Question | Answer |
|---|---|
| divisions of gray matter are? | dorsal horn, ventral horn, intermediate region |
| dorsal horn is? | sensory |
| ventral horn is? | motor |
| intermediate region contains? | interneurons |
| touch input from lower half of body; part of dorsal columns | gracile fasiculus |
| fine motor control | lateral corticospinal tract |
| proprioceptive input from body to cerebellum | spinocerebellar tract |
| pain and temperature input from body | spinothalamic tract |
| postural motor control | vestibulospinal and reticulospinal tracts |
| touch input from upper half of body; part of dorsal columns | cuneate fasiculus |
| motor input to upper limbs | rubrospinal tract |
| dorsal columns consists of? | gracile and cuneate fasiculus |
| balance and equilibrium conrolled? | spinocerebellar tract |
| baroreceptor reflex and taste system associated with? | solitary nucleus and tract |
| carries sensory info from face and conveys pain associated with? | spinal trigeminal nucleus and tract CN 5 |
| parasympathetic, preganglionic neuron | dorsal motor nucleus of vagus CN 10 |
| connects to brainstem | inferior cerebellar peduncle |
| eye movements associated with? | abducens nucleus and nerve CN 6 |
| controls facial movements | facial nucleus and nerve CN 7 |
| path in auditory system | lateral lemniscus |
| tell if something is on the R or L side of body | superior olivary nucleus |
| auditory associate with? | trapezoid body |
| transmit touch info | trigeminal main sensory nucleus CN 5 |
| chewing muscles | trigeminal motor nucleus CN 5 |
| micturition reflex associate with? | periaqueductal gray |
| basal nuclei fx degeneration causes parkinsons | sustantia nigra |
| eye movements | trochlear nucleus CN 4 |
| moves 4 of 6 eye muscles, parasym ganglions | oculomotor nucleus and nerve CN 3 |
| vision fx | superior colliculus |
| emotions | amygdala |
| basal ganglia | caudate nucleus |
| limbic system | fornix |
| memory | hippocampus |
| major byway sensory info to cortex | internal capsule, posterior limb |
| limbic system | mammillary body |
| basal ganglia | substantia nigra |
| receives info from body | ventroposterior lateral nucleus |
| recieve info from face | ventroposterior medial nucleus |
| this is nerve is the sense of smell, it only sensory (afferent) | olfactory nerve |
| primary sensory neurons in olfactory epithelium in roof of nasal cavity send olfactory (smell) information to the olfactory bulb. these fibers are the ? | olfactory nerve |
| contains cell bodies of secondary sensory neurons, whose axons comprise the olfactory tract. | olfactory bulb |
| conveys olfactory information to olfactory cortical areas | olfactory tract |
| this nerve is for the sense of sight and is only sensory | optic nerve |
| what are the primary sensory neurons of the optic nerve? | photoreceptors in retina of eye transmit visual information to bipolar cells in retina |
| where do the bipolar cells synapse? | on ganglion cells, whose cell bodies are also in the retina |
| what are the secondary neurons of the optic nerve | ganglion cells |
| axons of __ leave the eyeball to form the optic nerve | ganglion cells |
| innervation of eye muscles done by? | oculomotor nerve |
| has both motor and sensory neurons | oculomotor nerve |
| this nerve exits from the midbrain | oculomotor nerve |
| the optic nerve innervates these 4 of 6 eye muscles | superior rectus, medial rectus, inferior rectus, and inferior oblique |
| eye movement toward nose by medial rectus | adduction |
| move eye down by _ and helped by _ | inferior rectus, superior oblique CN 4 |
| move eye up by _ and _ | superior rectus, inferior oblique |
| innervates _ that elevates upper eyelid (so we can look up without eyelid getting in the way) | levator palpebrae superioris |
| sensory component contains a few fibers that transmit sensory info from muscle sensory receptors; these exit the motor nerves to course mainly in the opthalmic division of the ? | trigeminal nerve |
| innervation of the superior oblique eye muscle | trochlear nerve CN 4 |
| efferent and afferent for innervation of superior oblique eye muscles | trochlear nerve |
| this nerve exits from the caudal midbrain | trochlear nerve |
| moves eyeball down and lateral, causes inward rotation of eyeball | trochlear nerve |
| _ is the only cranial nerve that exits dorsally , and is the only one that crosses | trochlear |
| seonsory component from muscle receptors, similar to oculomotor | trochlear nerve |
| has parasympathetic component - arises from edinger-westphal nucleus (part of _ nuclear complex) | oculomotor nerve |
| preganglionic neurons project to ciliary ganglion in this nerve | oculomotor nerve |
| postganglionic fibers innervate constrictor pupillae muscle to constrict pupil, and ciliary muscle to change shape of lens in this nerve | oculomotor nerve |
| this nerve has sensory information from face, and motor control of chewing muscles | trigeminal nerve |
| this nerve has both afferent and efferent, nerve exits from pons | trigeminal nerve |
| _ arises from pons and courses to the _ ganglion, which contains cell bodies of sensory fibers. 3 major divisions of this leave the ganglion | trigeminal |
| sensory input from eye, orbit, forehead, ethmoid (roof of nasal cavity) and frontal sinuses | ophthalmic (V1) of the trigeminal nerve |
| sensory input from maxilla (upper jaw) and overlying skin, nasal cavity, palate, nasopharynx, and part of meninges | maxillary V2 of the trigeminal nerve |
| sensory input from mouth, lower jaw, and anterior 2/3rds of tongue. motor outflow to chewing muscles | mandibular V3 of trigeminal nerve |
| name the 3 divisions of the trigeminal nerve | V1 ophthalmic, V2 maxillary, V3 mandibular |
| pain and temp (secondary sensory neurons) associated with this nerve | spinal trigeminal nucleus |
| touch sensation (secondary sensory neurons) | trigeminal main sensory nucleus |
| cell bodies of primary sensory neurons that transmit information from chewing muscles | trigeminal mesecephalic nucleus |
| cell bodies of motor neurons that innervate chewing muscles | trigeminal motor nucleus |
| this nerve innervates lateral rectus of eye muscle | abducens nerve CN 6 |
| has both afferent and efferent , exits at pontomedullary junction | abducens nerve |
| moves the eyeball laterally (abduction) | abducens nerve |
| sensory component from muscle receptors, similar to oculomotor | abducens nerve |
| motor control of muscles of facial expression, and taste from this nerve | facial nerve, CN 7 |
| both afferent and efferent, nerve exits at pontomedullary junction | facial nerve |
| somatic motor control of muscles of facial expression is the motor component of this nerve | facial nerve |
| visceral parasympathetic motor control of salivary glands (except parotid), lacrimal gland, and mucus glands of this nerve | facial nerve |
| sensory input from skin on lower part of ear and behind the ear in this nerve | facial nerve |
| taste buds from anterior 2/3rds of tongue; but remember that other sensations from this region travels in trigeminal nerve. fibers course in solitary tract to terminate in solitary nucleus | facial nerve |
| auditory and vestibular information | vestibulocochlear nerve |
| only afferent ; nerve exits at pontomedullary junction, just lateral to facial nerve | vestibulochochlear nerve |
| hair cells in cochlea transmit information onto primary sensory neurons in this nerve | auditory component of vestibulocochlear nerve |
| primary sensory neurons exit the cochlea, from CN 8 and terminate in the cochlear nuclei in the brainstem | auditory component of vestibulocochlear nerve |
| hair cells in semicircular canals, saccule, and utricle transmit information onto primary sensory neurons | vestibular comp of vestibulocochlear nerve |
| primary sensory neurons exit the structures, form CN 8, and terminate in the vestibular nuclei in the brainstem | vesibular comp of vestibulocochlear nerve |
| nerve associate with taste and chewing | glossopharyngeal nerve CN 9 |
| both motor and sensory, nerve exits from medulla | glossopharyngeal nerve CN 9 |
| innervates a muscle involved in elevating the pharynx during swallowing and speech | motor comp of glosso nerve |
| parasymp control of carotid gland | motor comp of gloss nerve |
| input from carotid sinus and carotid bodies that monitor blood pressure and blood oxygen levels, respectively | sensory comp of glosso nerve |
| sensory input from part of ear and inner ear, posterior 1/3rd of tongue, and upper pharynx (gag reflex) | sensory comp of glosso nerve |
| taste sensation from posterior 1/3 of tongue | sensory comp of glosso nerve |
| comprises most of the parasym nervous system | vagus nerve CN 10 |
| both motor and sensory nerve exits from medulla | vagus nerve |
| smooth muscles and glands in pharynx, larynx, thorax, and abdomen (Parasy nervous system) | motor comp of vagus nerve |
| skeletal muscles in pharynx, larynx, and tongue (not all of them) | motor comp of vagus nerve |
| from all visceral structures innervated by the _; also from blood pressure receptors and chemoreceptors in the aortic arch | sensory comp of vagus nerve |
| part of ear, larynx, and pharynx | sensory comp of vagus nerve |
| motor control of sternomastoid and trapezius muscles in neck | spinal accessory nerve CN 11 |
| only motor in this nerve | spinal accessory nerve |
| cell bodies of motor neurons actually are located in upper cervical spinal cord; axons emerge from the cord to form a trunk that ascends to the medulla and then exits the skull with the vagus nerve | spinal accessory nerve |
| motor control of tongue muscles (except one) | hypoglossal nerve CN 12 |
| only motor, nerve exits from medulla | hypoglossal nerve |
Created by:
oupharm2012
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