4 The Motor System and Spinal Cord Flashcards
1
Q
Lesions rostral to the decussation result in
A
contralateral symptoms
2
Q
Lesions caudal to the decussation result in
A
ipsilateral symptoms
3
Q
Describe +ve motor signs
A
An excess of neural activity
Hyperreflexia, hypertonicity, Babinski sign
UMN problem
4
Q
Describe -ve motor signs
A
Motor deficits due to the loss of function of damaged neural structures
Weakness, loss of speed of movement, loss of dexterity
LMN problem
5
Q
What is responsible for Stretch (Myostatic) reflex
A
Muscle spindle
6
Q
What is responsible for Inverse Myotatic Reflex
A
GTO
7
Q
Describe Flexion reflex
A
Response to a suddenly applied noxious stimulus; withdrawal of limb
Accompanied by Crossed Extension reflex for balance
8
Q
A
