lecture 3 Flashcards by jasmine mander | Brainscape

Q

is cervical or sacral enlargement bigger

A

cervical

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Q

Sc ends at level

A

l1/l2

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Q

function film terminal

A

anchor Sc to sacrum

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Q

features of thoracic Sc

A

grey matter, smaller anterior horns

has lateral horn (visceral motor vibers)

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Q

features of lumbar SC

A

big anterior horns

less white matter

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Q

T/F white matter gets bigger as we go down cord

A

False, smaller as you go down

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Q

3 functions of SC

A

pathway
reflex
location

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Q

two main sensory tracts

A

fascicles gracilis

fascicles cunaeatus

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Q

where are fas gracilis and fas cuneatus found

A

dorsal column SC

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Q

order of lateral cortico tract to grey matter

A

C T L S

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Q

order of spinothalamic tract to grey matter

A

C T L S

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Q

whats first to come and first to go out

A

first out is C first in is S

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Q

role of lateral cortico tract

A

voluntary movement of extremities

skill

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Q

role of anterior corticospinal tract

A

innervation of core, posture, stability

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Q

does ACST cross ever

A

no

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Q

where does LCST cross

A

anterior commissure

caudal medulla

Q

somatotropin arrangement

A

Arm trunk limb

Ant to Post

Q

has cortispinal crossed at pyramids

A

no

Q

corticspinal tract originates where

A

in primary motor cortex: UMN

Q

where does corticspinal tract synapse

A

LMN

Q

where does CST cross

A

caudal medulla “pyramidical deccusation”

Q

how to motor fibres travel

A

anteriorly

Q

T/F left side of cortex interravte Left side of SC

A

Left cortex does RIGHT body

Q

vestibulospinal tract

A

balance, posture, mm tone

Q

when to vestibulospinal and reticulospinal tract cross

A

SC

Q

parts of corticospinal tract

A

lateral and anterior

Q

reticulospinal tract

A

posture, mm tone

Q

tectospinal tract

A

direct eyes, head neck