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Neuo 1
Neuro sucks
| Question | Answer |
|---|---|
| CNS consists of | Brain and Spinal cord |
| PNS | Nerves that connect the Brain and Spinal cord with the peropheral structures of the body |
| In PNS Sensory fibers enter | the dorsal root (posteior) |
| PNS motor fibers exit | the ventral root anterior |
| Spinal Nerve | joining of sensory and motor "mixed root" |
| Cranial Nerves are compo sed of | sensory and motor fibers |
| Visceromotor part of | CNS and PNS |
| VIsceromotor AKA | Autonomic |
| Autonomic regulates | motor responses the body cannot consciously control |
| Autonomic consits of | nerous that innervate smooth muscle, cardiac muscle, and glandular epithelium (cells of endocrine glands) |
| Nervous tissue is distributed | thoughtout most tissues of the body |
| All nevous tissue shares a common histology | 1. neurons 2. Glial Cell |
| Glial Cells | specialized non-neuronal supporting cells of CNS |
| Nuerons | specialized to receive info transmit electrical impules, and influence other nuerons and target tissue |
| Structure of Neurons | Cell body, Dendrites, and Axon |
| Cell body | gray matter of CNS |
| Dendites | finger-like projections that carry info to the cell body |
| Axon | carry electrical impules away from cell body-white matter of CNS, |
| Spinal Cord location | vertebral canal |
| Spinal cord rostrally continous with | medualla oblongata |
| Spinal Cord link between | PNS and brain |
| Spinal cords conveys, and carries | conveys sensory info from body wall, extemities, and gut-carries motor impules to these areas |
| Spinal cord impules enter and exit ?? pairs of spinal nerves | 31 pairs |
| Spinal cord contains | sensory, motor, ascending, and desending, and tracks |
| Ascending pathways of spinal cord | carry sensory info to higher centers |
| Spinal cord descending pathways effect | activity of neurons in spinal cord gray matter (cell body) |
| Spinal cord continous with meduall at | foramen magnum |
| Meddual is the most_____part of the brain | caudal |
| Medulla consists of | Neruons, acending and desending tracts, |
| Ascending tracts of Medulla | involved in carrying sensory inffor |
| medulla and desending tracts involved in | motor functions |
| Some of medualls neuronal bodies organized into | nuclei, gangli, cluster |
| Medualls contains Cranial Nerves | Portions of TVS-trgeminal, vestibulocochlear, and spinal accessory, and (VHG) Vagus, hypoglossal,and glossopharyngeal |
| Medulla regulates | heart rate, respiration, and various visceral functions |
| Similartity of Pons and Cerebellum | Embryonically orginate from same neuronal tube |
| In mature adult Pons forms | Brainstem |
| In Mature adult Cerebellum is located | Suprasegemental to structure, and posterior to brainstem |
| Pon contains crainal nerves | TV FA-Portrions-Trigemial and vestibulocochlear |
| Pons transvered with | ascending and desending tracts |
| Anterior region of Pons contains | large populations of nuerons (pontine nuclei that form a relay between the cerebral cortex, and ceerebellum and dsecending motor fibers |
| Cerebellum fuctions | major part of Motor system-coodrinates activity of individual muscle groups to produce smooth, purposeful, synergistic movements |
| Midbrain is link between | forebrain and brainstem |
| Acending and descending pathways to from the forbrain must past though | midbrain |
| Midbrain CN | OTT occulomotor, trochlear, and trigeminal |
| Midbrain fuctions | Visual and Auditory reflexes, motor function, and transmision of pain, and viseral functions |
| Forbrain is composed of | cerebral hemispheres and basal nuclei and thalmus |
| Thalmus composed of serveral regions | Hypothalmus, sub, Epi, and Dorsal |
| Thalamus is____to midbrain | rostral |
| Thalmus is surronded by | cerbral hemisphere |
| Tthalamus can only be seen | brain cut in cronal or axial planes |
| What passes thought thalmus | all sensory info that reaches cerbral cortex, except olfaction, pass thru thalmus |
| Thalmus functions | receives sensory info(temp, pain, vision) and sends to specific regions to be decocded |
| What receives imput from pathways relating info regarding postion sense, and tendon tension- | Thalmus reievie imput, and sends this info to cerebral cotex to allow for smooth purpose ful movements |
| Hypothalmus size and function | small, but functions in sexual behavior, feeding, hormonal secretions of pituitarty, body temp regulation, and visceromotor functions |
| Largest and most obvious parts of brain | Cerebral hemispheres-2 |
| Cerebral Hemisperes composed of 3 | Cerebral cortex, Subcortical white matter, and Basal nuclei |
| Cerebral cortex composed of | layer of neural cell bodies |
| Subcortical white matter co mposed of | myelinated axons that carry info to/from |
| Basal nuclei composed of | nerouonal cells bodies invloved in motor function |
| Functional system | set of neurons linked together-pathways-cover more than one region |
| Regions | atatomics parts of CNS-structures |
| Sinals that influcence hand movements orginal in | Cerbral cortex |
| Injury to midbrain cause | motor problems in hand and parial paralysis of eye |
| Brain injury that results in only upper extemity means | the lesion is only of one side of the brain or brainstem |
| Partail paralysis of upper extremity coupled with problems with eye movement means | lesion in midbrain |
| What are best located in lesions | cranial lesions |
| Deficits on same side of head and body mean lesions are | lesions in cerebral hemisphere |
| Deficits on 1 side of head, and opposite on body indicate lesion in | lesion in brainstem=crossed deficts |
| Deficits of only the body indicate | lesion in spinal cory |
| Afferent fibers | conduction toward a structure--incoming info |
| Efferent fibers | conduction away from a structure-outgoing info |
| posterior= | dorsal |
| anterior | ventral |
| medial | toward the midline |
| lateral | away from the midle |
| rostral | towards the nose |
| caudal | toward the tail |
| Largest most organized part of white matter | Internal Capsule |
Created by:
talkglitter2486