Disorders of upper and lower motoneurones

Question 1

What does lesions of the CNS (UMN) structures result in?

Answer 1

Patients making imperfect movements due to emergence of tremor, clumsiness, stiffness, slowness, unwanted involuntary movements or a lack of sensory feeling

Question 2

What does lesions of the LMN or peripheral motor apparatus tend to result in?

Answer 2

Muscle weakness if not paralysis and wasting of muscle bulk with time

Question 3

How do lesions of nervous system tissues occur?

Answer 3

Ischaemia, trauma or disease.