few more questions plzz

[hydroxyappatite]

1.the sympathetic innervation to the head and neck is distributed via
.blood vessels
.facial planes
.lymphatic vessels
.hyoid musculature
.cranial nerves 3 7 9 10
2.reduced serum potasium(hypokalemia)might produce which of the following results
. reduced membrane threshold potential
. elevated memb.threshold potential
. hyperpolarised memb. pot.
. hypopolarised cell memb. pot
. hyperactive neuromuscular reflexes
3 spasticity is best described by
failure of recriutment
depressed stretch reflexes
exaggerated stretch reflexes
presence of fibrillary contractions
4 destruction of left spino crebellat tract at T2 wud be expected to eliminate positional sense on the
right side of the body above T2
right side below T2
left side above T2
left side below T2
plzzzz can someone help with these and expalin the answers
thank u

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[crazydentist]

blOOD VESSELS....sYMPATHITIC SYSTEM INNERVATES HEAD N CECK ALONG INTERNAL N EXTERNAL CAROTID...
hYPER POLARISED MEMBRANE POTENTIAL....DUE TO MORE GRADIENT FOR EFFLUX OF k+ IONS
rIGHT SIDE BELOW T-2....SPINO CEREBELLAR CROSSES AT L-4...SO NE LESION ABOVE L4 WILL AFFECT OPPOSITE SIDE BELOW THAT LEVEL