After a Blow to the back of the head....?

Question

After suffering a blow to the beack of the head, a patient becomes comatose but vital signs are stable. This suggests an injury to:

a) Postcentral gyrus
b) reticular formation
c) limbic system
d) cerebellum
e) medulla

Answer 1

I'd say B. The reticular formation is involved in sleep, and other various activities, as well as filtering out stimuli to manageable levels. Damage could result in loss of this regulation, and a coma.

Damage to A would probably result in loss in sensation in various parts of the body.
Damage to C would result in memory loss.
Damage to D would result in loss of movement and coordination.
Damage to E would result in unstable (if any) vital signs.

Answer 2

D?