- General Organization 11
CENTRAL NERVOUS SYSTEM
PERIPHERAL NERVOUS SYSTEM
Upper motor
neuron (UMN)
UMN injury LMN injury
Normal
Cranial nerve
Spinal nerve
Brain
Brainstem &
Cerebellum
Spinal cord
Lower motor
neuron (LMN)
UMN
injury
White
matter tract
LMN injury LMN fiber
UMN fiber
Muscle
To n e
Muscle Stretch
Reflexes
Pathologic
Reflexes
UMN
LMN
Hyperactive
Hypoactive
Spastic
Flaccid
Present
Absent
EXAM FINDINGS
Injury
Type
DRAWING 1-3 Divisions & Signs