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52 Cards in this Set
- Front
- Back
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grey matter contains |
neurons |
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white matter contains |
axons |
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each dorsal root contains a... |
spinal ganglion |
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______ fibers are in the ventral horn of the grey matter |
somatic |
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______ fibers are in the intermediate horn |
autonomic |
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brachial plexus is located.... |
C6-T2 |
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lumbosacral plexus is located... |
L4-L7 |
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sensory ganglia are located near but outside the... |
brainstem |
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cell bodies of motor fibers are located... |
within the brainstem |
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sympathetic peripheral ganglia are near the _________ and are ______. |
SC, long |
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parasympathetic peripheral ganglia are near the __________ and are ________. |
target organ, short |
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what type of cells line the ventricles? |
ependymal cells |
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3 things that determine mem pot |
1. concentration of ions. 2. action of pumps 3. permeability of memb |
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what NT leads to muscle contraction? |
Acetylcholine |
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Excitatory NT's open channels for ______ ions. |
positive |
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Inhibitory NT's open channels for ______ ions. |
negative |
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2 excitatory NTs |
glutamate and Ach |
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inhibitory NT in the brain |
GABA |
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inhibitory NT in the SC |
glycine
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the groove in the lateral walls of the neural tube is called the... |
sulcus limitans |
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dorsal plate is... |
sensory |
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ventral plate is... |
motor |
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neural tube layer for cell proliferation |
germinal layer |
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neural tube layer that becomes white matter |
marginal layer |
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neural tube layer that becomes grey matter |
mantle layer |
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2 myelin sheath functions |
prevents ion leakage insulates nerve fibers |
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in PNS, each nerve fiber is surrounded by... |
endoneurium |
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in PNS, bundle of nerve fibers is surrounded by... |
perineurium |
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the entire nerve is surrounded by... |
epineurium |
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UMN in within the __NS |
CNS |
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UMN cell bodies are located in which 2 places? |
motor nuclei of brainstem motor cortex of forebrain |
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LMN induces... |
muscle contraction |
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LMN cell bodies are located in which 2 places? |
brainstem spinal cord |
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sensory info is projected to... |
cerebellum and somatosensory cerebrum |
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sensory components of cranial nerves synapses in its... |
cranial nerve nucleus |
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monosynaptic reflexes involve... |
one sensory neuron and one motor neuron |
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polysynaptic reflexes involve... |
interneurons |
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cervical intumescence is ______ to _________ limbs. |
motor, thoracic |
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lumbosacral intumescence is ______ to limbs. |
motor, pelvic |
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dorsal funiculi carry _________ _______ tracts. |
ascending, sensory |
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ventral funiculi carry ________ _______ tracts. |
descending, motor |
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lateral funiculi carry... |
both! |
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important UMN cell bodies for quadruped movement are in.... |
brainstem nuclei |
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example of fast conduction velocity |
proprioception |
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example of slow conduction velocity |
nociception |
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Un/Subconscoius proprioception goes to the _____________ and involves the _________ nerve. |
cerebellum, vestibular |
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conscious proprioception goes to the _______ and involves the _________ nerve. |
forebrain, trigeminal |
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unconscious proprioception is _____lateral. |
ipsilateral |
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conscious proprioception is _______lateral. |
contralateral |
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(CP) fasciculus gracilis is the ______ portion of _________ funiculis. Axons from _______ limbs ________ |
medial, dorsal pelvic, caudal |
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(CP) fasciculus cuneatus is the ______ portion of _________ funiculus. Axons from _______ limbs ________ |
lateral, dorsal thoracic, cranial |
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examples of 2 reflexes |
palpebral and corneal |
