The corticospinal tract, the corticobulbar tract, and the ...

[Beheh]

The corticospinal tract, the corticobulbar tract, and the rubrospinal tract make up the ______________ of descending tracts from the primary motor cortex.
 
  a. lateral group
  b. ventromedial group
  c. caudal group
  d. posteromedial group
  e. rostral group

Question 2

The disproportionate cortical representation in the primary motor cortex of the fingers and mouth is due to the fact that
 
  a. the hands and mouth take more innervation to move.
  b. are less sensitive than other areas of the body.
  c. are more sensitive than other areas of the body.
  d. require greater precision of movement.
  e. require less precision of movement.

[duy1981999]

Answer to Question 1

Answer: a. lateral group

Answer to Question 2

Answer: d. require greater precision of movement.

[Beheh]

Wow, this really help

[bulacsom]

Thanks for the timely response, appreciate it