Download Brainstem*s involvement in Motor process

BRAINSTEM’S INVOLVEMENT IN
MOTOR PROCESS
MAIN FUNCTIONS IN MOTOR PROCESS:
• Mediates motor (and sensation) control of the head, neck and face.
• Influences parasympathetic reflexes
• Contains ascending and descending pathways that carry motor (and
sensory) information to other divisions of the central nervous system
CRANIAL NERVES
• Most of cranial nerves arise from brainstem
• The occular motor nerves (III.,IV.,VI.) control movements of the eyes
• The spinal accessory nerve (XI.) innervates the trapesius and
sternocleidomatoid muscles on the same side of the body.
• The hypoglossal nerve (XII.) innervates the muscles of the tongue.
NUCLEI OF BRAINSTEM
• General visceral Motor Column:
It contains preganglionic neurons that control
eye movements and parasymphatetic
preganglionic neurons that innervate
multiple regions of parasymphatetic system.
• Special Visceral Motor Column:
TheseI nuclei innervates muscles of
mastication,facial expression, larynx
pharynx.