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| an imaginary line drawn down the spine |
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| a group of symptoms that characteristically occur together after brain damage |
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| to work or perform purposeful actions |
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| function is completely absent |
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| damage in both hemispheres |
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| damage in only one hemisphere |
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| Central nervous system components |
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| the brain and spinal cord |
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| Somatic Nervous System components |
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| the cranial nerves and the spinal nerves |
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| Sympathetic NS, and Parasympathetic NS |
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1) Dura matter- outside level. tough
2) Arachnoid membrane- middle
->Sub arachnoid space: filled with CSF
3) pia matter- inner, clings to brain |
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| CSF- produced by the choroid plexus in the ventricles, mainly the lateral ventricle, 500 ml/day |
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| capillaries fit tightly together, selectively permeable. allows in nutrients and good. keeps toxins out |
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| part of brain that controls vomiting. close to bottom of 4th ventricle, rich in dopamine cells, why nausea is a side effect of parkinson's drugs |
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1) internal carotiod arteries-rostral
2)vertebral arteries- caudal
3) circle of willis- middle, gives blood alternate routes to travel & circulate incase of an accident. |
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| Dendrite-soma-axon (in myelin sheath)-nodes of randier- terminal buttons |
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| Interneuron, one axis, one dendrite tree. (Sensory to brain) |
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| motorneuron, one axon many dendrites, message to muscle. |
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| sensory, (messages to brain) one stalk that splits onto 2 branches |
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| NT, creates an excitatory or inhibitatory effect on the next neuron. released by the terminal buttons and cross the synapse into the next neuron if they fit in. |
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| CNS Support Cells, "glue" that provides physical support, controls the nutrient flow, Phagocytosis |
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| holds neurons in place, phagocytosis, transport nutrients to neurons |
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| CNS-forms myelin sheaths for brain axons. forms up to 50 sheaths |
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| PNS- forms one myelin sheath for the areas outside the CNS. One cell/one axon |
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| collection of cell bodies in the CNS |
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| collection of axons outside the CNS |
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| collection of axons inside the CNS |
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| Spinal cord layout (Medial, superior to inferior) |
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Vertabrae (spinal column) -> Coccygeal Segement
*Cervial-thorasic-lumbar-sacral |
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| principal stating dorsal part of the Spinal Cord is sensory, ventral is motor |
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| Anterior to posterior, toeards ventral. 12 total. some sensory some motor, some are both. |
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