motor system

Question 1

both ___ and ___ give rise to descending projections

Answer 1

the precentral gyrus and
the premotor cortex .

Question 2

Why no strict somatotopy in the primary cortex

Answer 2

A single corticospinal axon may supply multiple columns of
LMN in the ventral horn
A single spike in a corticospinal axon may activate 4
different muscles in the forelimb.

Question 3

which area in the frontal lobe contains mirror cells?

Answer 3

lateral area contains

Question 4

Pyramidal pathways (2)

Answer 4

Corticospinal and corticobulbar tracts

Question 5

collaterals of corticospinal tracts _____ nucleus and _____

Answer 5

red; reticular formation

Question 6

Extrapyramidal pathways

Answer 6

Vestibulospinal and Reticulospinal tracts