13.5 Descending Motor Paths and Functions

Question 1

Corticospinal

Fx:

Answer 1

Fx: fine motor control hand
motor neuron recruitment to increase force
inhibition postural reflexes

Question 2

Corticobulbar

Fx:

Answer 2

Fx: control of muscles of face, chewing, speech, swallowing

Question 3

Rubrospinal

Fx:

Answer 3

Fx: faciliatation of upper limn flexors

Question 4

Lateral vestibulospinal

Fx:

Answer 4

Fx: extension against gravity

Question 5

Medial vestibulospinal

Fx:

Answer 5

Fx: coordinationg of head movements

Question 6

Pontine reticulospinal

Fx:

Answer 6

Fx: facilitation of postural reflexes

Question 7

Medullary reticulospinal

Fx:

Answer 7

Fx: inhibit spinal segment reflexes

Question 8

Tectospinal

Answer 8

Fx: coordination of head with eye movements