Term
| spinal nerves (31), cranial nerves (12), autonmoic nerves |
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Definition
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Term
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Definition
| functionally peripheral nerves are either |
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Term
| sensory component, motor component, association component to connect and coordinate the various CNS centers |
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Definition
| functionally CNS consists of (3 things) |
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Term
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Definition
| functional unit of the nervous system |
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Term
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Definition
| motor neurons are what type of neuron? |
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Definition
| sensory neurons are what type of neuron |
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Definition
| interneurons are what type of neuron? |
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Term
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Definition
| chain of connecting neurons in the CNS |
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Term
| tract, fasciculus, peduncle, lemniscus |
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Definition
| bundle of axons in the CNS can be (4 things) |
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Term
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Definition
| name for a bundle of axons in the PNS |
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Term
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Definition
| contains ascending and descending fiber pathways (axons) in spinal cord |
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Term
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Definition
| contains nerve cell bodies and synapses (no myelin) in spinal cord |
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Term
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Definition
| gray matter in spinal cord containing sensory neurons |
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Term
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Definition
| contains cell bodies for lower motor neurons, & somatic motor neurons destined for skeletal muscle |
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Term
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Definition
| contains Autonomic nervous system cell bodies, not in every level of spine, just T1-L2 sympathetic, and S2-S4 parasymapthetic |
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Definition
contains lower motor neurons (peripheral nerve-somatic motor, skeletal muscle)
and sympathetic axons through this |
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Term
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Definition
| location of sensory cell bodies of primary sense neuron, no synapse, just cell body |
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Term
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Definition
| where dorsal and ventral root meet, somatic motor + visceral motor (autonomic) + sensory (from dorsal root) |
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Term
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Definition
| branches of spinal nerve proper |
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Term
| fasciculus gracilis, and fasciculus cuneatus |
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Definition
| 2 parts.tracts of posterior column |
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Term
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Definition
| posterior, medial spinal column does conscious propioception for the lower body |
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Term
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Definition
| lateral posterior column tract, does conscious proprioception for the upper body |
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Term
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Definition
| mid-sides colmn of spinal cord- motor for upper motor neurons |
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Term
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Definition
| mid-lateral rim, unconscious proprioception |
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Term
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Definition
| anterior rim, pain/temp and light touch |
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Term
| pain & temp, proprioception, light touch |
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Definition
| 3 main sensory systems into the spinal cord |
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Term
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Definition
| the ability to recognize objects by touching and handling them with eyes closed |
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Term
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Definition
| tend to synapse before they cross over the midline |
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Term
| cross over at spinal level and ascend to opposite side of brain (thalmus and cerebral cortex) |
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Definition
| pain and temp, pathway to brain |
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Term
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Definition
| location of pain and temp neuron in spinal cord |
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Term
| ascends spinal cord on same side, then crosses over in the brain stem |
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Definition
| conscious proprioception, pathway to brain |
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Term
| 2 tracts, one neuron crosses over as part of thespinothalamic tract, one neuron ascends on same side in the posterior column |
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Definition
| pathway of light touch to brain |
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Term
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Definition
| where do light touch sensory neurons enter the spinal cord |
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Term
| neuron enters and ascends on same side via spinocerebellar tract to the cerebellum |
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Definition
| what is the path of unconscious proprioception to the brain |
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Term
| 1st neuron motor cortex, axon crosses in brain stem, takes corticospinal tract, synapse with neuron in ventral horn |
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Definition
| pathway of a motor neuron from brain |
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Term
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Definition
| first neuron in somatic motor pathway, cell body in motor cortex of brain |
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Term
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Definition
| 2nd neuron in somatic motor pathway, cell body in ventral horn |
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Term
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Definition
| UMN or LMN defect? spastic paralysis |
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Term
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Definition
| UMN or LMN defect? no atrophy |
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Term
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Definition
| UMN or LMN defect? fasciculation and fibrilations not present |
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Term
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Definition
| UMN or LMN defect? hyperreflexia |
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Term
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Definition
| UMN or LMN defect? babinski reflex may be present |
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Term
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Definition
| UMN or LMN defect? flaccid paralysis |
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Term
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Definition
| UMN or LMN defect? significant atrophy |
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Term
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Definition
| UMN or LMN defect? fasciculations and fibrillations present |
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Term
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Definition
| UMN or LMN defect? hypOrreflexia |
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Term
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Definition
| UMN or LMN defect? no babinski reflex |
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Term
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Definition
| disease characterized by inability to have smooth muscle control due to an upper motor neuron lesion |
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Term
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Definition
| occur when small groups of muscle visibly twitch as a result of spontaneous discharge of motor neurons with activation of motor units |
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Term
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Definition
| are minute contractions that can only be detected with electromyography studies of the muscle in a physician's office. |
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Term
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Definition
| occur when, after denervation of a muscle, additional acetylcholine receptors develop along the surface of muscle fibers causing the muscles fibers to respond to minute amounts of free acetylcholine in the circulating blood. (seen with EMG studies) |
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Term
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Definition
| scratch sole of foot from lateral heel to toes. positive sign if the person extends of fans out their toes. can see in newborns sometimes. (positive test is not normal) |
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