QuestionSBA
QuestionChoice
Hypotonia is a lower motor neuron pathological sign. It occurs as a result of damage to gamma motor neurons. Examples of diseases causing lower motor neuron pathology include progressive muscular atrophy (a type of motor neuron disease) and poliomyelitis.
10025707
c
Hypotonia
QuestionChoice
Muscular atrophy is a lower motor neuron pathological sign. It commonly occurs due to disuse of the musculature following paresis. Examples of diseases causing lower motor neuron pathology include progressive muscular atrophy (a type of motor neuron disease) and poliomyelitis.
10025706
b
Muscular atrophy
QuestionChoice
Flaccid paralysis is a lower motor neuron pathological sign. It occurs as a result of damage to gamma motor neurons. Examples of diseases causing lower motor neuron pathology include progressive muscular atrophy (a type of motor neuron disease) and poliomyelitis.
10025708
d
Flaccid paralysis
QuestionChoice
Fasciculations are a lower motor neuron pathological sign. This involves twitching of small groups of muscle fibres due to the spontaneous discharge of motor units. Examples of diseases causing lower motor neuron pathology include progressive muscular atrophy (a type of motor neuron disease) and poliomyelitis.
10025709
e
Fasciculations
QuestionChoice
A positive Babinski sign, in which stroking the sole of the foot causes dorsiflexion with extension of the hallux, is a key indicator of an upper motor neuron lesion. In healthy individuals, the foot deviates downwards or does not move. Other upper motor neuron signs include spasticity and hyperreflexia.
10025705
a
Upgoing plantar reflex
Concept
Chapter
2693
3743
Ischaemic Stroke
Topic
141
Neurology
17539
A 65 year old man presents to the emergency department with sudden onset left-sided weakness. Neurological examination reveals a range of upper motor neuron signs. A CT head shows a hypo-dense region focused on the majority of the middle cerebral artery (MCA).  An ischaemic MCA stroke is diagnosed.

Which of the following is an example of an upper motor neuron sign?
a