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Flashcards in SA- all in the skull Deck (52)
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1

is there is an incr in CO2 or a decr in O2 cerebral bl vessels will _____

dilate

2

damage to PICA = _____ sx

S/s:_______

wallenberg sx

s/s: Ipsi loss of (s) to face, contra loss of (s) to body

3

_____ art. off the vert. art. supplies bl to the anterior 2/3 of the SC

____ art. off the radicular art. supplies bl to the posterior 1/3 of the SC

anterior 2/3rd: anterior spinal art.

posterior 1/3rd: posterior spinal art.

4

R. carotid art. comes off the ____

Left carotid art. comes off the ___

Bifurcates at:_____

R.: R. Brachiocephalic

L: Aorta

bifurcates at: C3/4

5

The great cerebral V. of galen drains into the ____ sinus

superior cerebral V. goes int the ____ sinus --> found in the falx cerebri

great cerebral v= straight sinus "Great is staight"

superior cerebral V= superior sagittal sinus
"Superior is superior"

6

Name the flow of the CSF

Lateral ventricles--> foramen monroe--> 3rd ventricle --> cerebral aqueduct of sylvius --> 4th ventricle --> foramen of magendie & foramen of Lushka --> reabsorbed in arachnoid villi in superior sagittal sinus

7

damage to middle meningeal art. = ______ hemorrhage

epidural hemorrhage

8

damage to venous system= ______hemorrhage

subdural hemorrhage

9

Beri aneurysm = ______ hemorrhage

subarachnoid hemorrhage

10

Rubrospinal = _____ nucleus

fxn: _____

rubrospinal = Red Nucleus

fxn: prox. M flexors of upper and lower ext.

11

fxn of the reticulospinal tract?

Extensor M of back and arms

except: back muscles innervated by a plexus

12

Fxn of the tectospinal tract

also contains the superior and inferior colliculus
- fxn:

Neck Muscles

superior colliculus: reflex to light
inferior colliculus: sound

13

______ tract goes to the EXTENSOR M's of the back and legs.

It also supplies the medial longitudinal fascicullus

Vestibulospinal tract

14

____ motor neurons are ____ fibers for tone of the back extensors

gamma motor neurons

intrafusal fibers for tone

15

______ tract is for the FLEXORS of the Distal Ext.

Corticospinal (pyramids)

Lateral decussates at: medulla
Ventral decussates at: spinal level

16

The corticospinal tract for the FLEXORS of the DISTAL ext. decussates:

Lateral tract:____
Ventral tract: ____

Lateral: at the medulla
Ventral: at the spinal level

17

Proximal muscle flexors of the UE/LE:____ tract

Distal muscle flexors of teh UE/LE: ___tract

Prox: Rubrospinal tract

Distal: Corticospinal tract

18

____ tract: extensors for the back and ARMS:

_____ tract: extensors for the back and LEGS


Back and arms: Reticulospinal

Back and legs: vestibulospinal

19

____ fibers are for movement of the muscles. Muscles will use ____ motor neurons for movement

extrafusal fibers= movement
alpha motor neurons

(tone= intrafusal fibers, gamma motor neurons)

20

_____ blocks pn that comes through the spinothalamic tract

location: Rexed lamina ___

____ tract goes through it

substantia gelatinosa

location: rexed lamina II

tract: tract of lissauer

21

Name the stucture at each location of the rexed lamina:

II: _____
VII:____
VIII:____
IX:____
X:____

II: Substantia gelatinosa (blocks pn)
VII: Nucleus dorsalis of clark
VIII: Anterior horn, alpha motor (movement)
IX: Anterior horn, gamma motor (tone)
X: grey commissure (central canal)

22

_____ are the receptors for the spinothalamic tract

Fiber type:____

Free naked N endings

type: unmyelinated C fibers

23

The lateral spinalthalamic tract synapses in the posterior horn in "tract of_____" at the ______

tract of lissauers in the substantia gelatinosa (rexed laminae II)

24

Where does the lateral spinalthalamic tract decussate across to?

It then travels up the lateral spinothalamic tract to --> _______ -->ends at: ____

Lamina 7

VPL of contra thalamus --> contra cortex

25

cc: MC location for the central canal to be dilated at in syringomyelia

It cuts of the ____ tracts

MC location: C5/C6

cuts the spinalthalamic tracts

26

_____ fibers are for fast pain

A-delta fibers

27

Fxn of the receptors for the dorsal column:
Meissner's/ Merkel's = ______
Pacinian=_______
Ruffini=_____

Meissner's/ Merkel's = Touch
Pacinian= vibration
Ruffini= joint position

28

Where is the decussation for the posterior columns

Medial lemniscus

29

Name the 3 lobes of the Cerrebellum:
_____: balance of spine
_____: balance for arms & legs
____: How the cerebellum talks to cortex

Flocculonodular : balance of spine
Anterior lobe : balance for arms & legs
Posterior lobe : How the cerebellum talks to cortex

30

The nuclei of the cerebellum:
_____: spine
_____: proximal jts (Ex: GH)
_____: Middle jts (EX: Elbow)
_____: distal jts (ex: digits)

Fastigal: spine
Globus : proximal jts (Ex: GH)
Emboliform: Middle jts (EX: Elbow)
Dentate: distal jts (ex: digits)