UMN v. LMN Pathologies Flashcards
T/F: Upper motor neurons end just prior to anterior horn cell.
TRUE
T/F: Lower motor neurons begin at the anterior horn cell.
TRUE
The following are characteristic of what type of motor neuron abnormality?
- Initial weakness
- Spasticity
- Decreased motor control
- Exaggerated deep tendon reflex
Upper motor neuron lesion
Is it UMN or LMN: Stroke/CVA?
UMN
What 5 UL positions are characteristic of flexion synergy pattern?
- shoulder gridle retraction and elevation
- shoulder abduction and external rotation
- forearm supination
- elbow flexion
- wrist and finger flexion
What 3 LL positions are characteristic of flexion synergy pattern?
- hip flexion, abduction, external rotation
- knee flexion
- ankle dorsiflexion and inversion
What 5 UL positions are characteristic of extension synergy pattern?
- shoulder gridle protraction and depression
- shoulder adduction and internal rotation
- elbow extension
- forearm pronation
- wrist and finger flexion
What 3 LL positions are characteristic of extension synergy pattern?
- hip extension, adduction, external rotation
- knee extension
- ankle plantarflexion and inversion
Is it UMN or LMN: multiple sclerosis?
UMN
An idiopathic chronic disease characterized by demyelination of nerves which leads to formation of plaques that interfere with signal transmission down the axon.
Multiple sclerosis
Is it UMN or LMN: traumatic brain injury?
UMN
A condition in which the brain cells suddenly die because of a lack of oxygen typically caused by an obstruction of the blood flow of the rupture of an artery that feeds the brain.
Stroke
Is it UMN or LMN: cerebral palsy?
UMN
Group of neurological disorders that appear in infancy or early childhood permanently affecting body movement, muscle coordination, and balance. Affects the part of the brain that controls muscle movements.
Cerebral palsy
The following are characteristics of what type of motor neuron lesion?
- flaccid muscles/decreased tone
- absent or decreased reflexes
- muscle atrophy
- muscle twitching, but NO clonus
Lower motor neuron