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52 Cards in this Set

  • Front
  • Back

grey matter contains

neurons

white matter contains

axons

each dorsal root contains a...

spinal ganglion

______ fibers are in the ventral horn of the grey matter

somatic

______ fibers are in the intermediate horn

autonomic

brachial plexus is located....

C6-T2

lumbosacral plexus is located...

L4-L7

sensory ganglia are located near but outside the...

brainstem

cell bodies of motor fibers are located...

within the brainstem

sympathetic peripheral ganglia are near the _________ and are ______.

SC, long

parasympathetic peripheral ganglia are near the __________ and are ________.

target organ, short

what type of cells line the ventricles?

ependymal cells

3 things that determine mem pot

1. concentration of ions.


2. action of pumps


3. permeability of memb

what NT leads to muscle contraction?

Acetylcholine

Excitatory NT's open channels for ______ ions.

positive

Inhibitory NT's open channels for ______ ions.

negative

2 excitatory NTs

glutamate and Ach



inhibitory NT in the brain

GABA

inhibitory NT in the SC

glycine

the groove in the lateral walls of the neural tube is called the...

sulcus limitans

dorsal plate is...

sensory

ventral plate is...

motor

neural tube layer for cell proliferation

germinal layer

neural tube layer that becomes white matter

marginal layer

neural tube layer that becomes grey matter

mantle layer

2 myelin sheath functions

prevents ion leakage


insulates nerve fibers

in PNS, each nerve fiber is surrounded by...

endoneurium

in PNS, bundle of nerve fibers is surrounded by...

perineurium

the entire nerve is surrounded by...

epineurium

UMN in within the __NS

CNS

UMN cell bodies are located in which 2 places?

motor nuclei of brainstem


motor cortex of forebrain

LMN induces...

muscle contraction

LMN cell bodies are located in which 2 places?

brainstem


spinal cord

sensory info is projected to...

cerebellum and somatosensory cerebrum

sensory components of cranial nerves synapses in its...

cranial nerve nucleus

monosynaptic reflexes involve...

one sensory neuron and one motor neuron

polysynaptic reflexes involve...

interneurons

cervical intumescence is ______ to _________ limbs.

motor, thoracic

lumbosacral intumescence is ______ to limbs.

motor, pelvic

dorsal funiculi carry _________ _______ tracts.

ascending, sensory

ventral funiculi carry ________ _______ tracts.

descending, motor

lateral funiculi carry...

both!

important UMN cell bodies for quadruped movement are in....

brainstem nuclei

example of fast conduction velocity

proprioception

example of slow conduction velocity

nociception

Un/Subconscoius proprioception goes to the _____________ and involves the _________ nerve.

cerebellum, vestibular

conscious proprioception goes to the _______ and involves the _________ nerve.

forebrain, trigeminal

unconscious proprioception is _____lateral.

ipsilateral

conscious proprioception is _______lateral.

contralateral

(CP) fasciculus gracilis is the ______ portion of _________ funiculis.


Axons from _______ limbs ________

medial, dorsal


pelvic, caudal

(CP) fasciculus cuneatus is the ______ portion of _________ funiculus.


Axons from _______ limbs ________

lateral, dorsal


thoracic, cranial

examples of 2 reflexes

palpebral and corneal