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Central Motor Neuron Syndrome and Peripheral Motor Neuron Syndrome Quiz

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Central Motor Neuron Syndrome and Peripheral Motor Neuron Syndrome Quiz

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Questions and Answers

Which of the following is the MAIN pathway for control of voluntary movement?

Cranial nerve nuclei

Corticobulbar tract

Corticospinal tract (correct)

Anterior horn cells

Which lobe of the brain is responsible for the perception and recognition of auditory stimuli, memory, and speech?

Temporal lobe (correct)

Occipital lobe

Parietal lobe

Frontal lobe

What is the MAIN difference between a central (upper motor neuron) lesion and a peripheral (lower motor neuron) lesion?

Central lesions cause weakness in specific myotomes, while peripheral lesions cause diffuse weakness.

Central lesions cause spastic paresis, while peripheral lesions cause flaccid paresis. (correct)

Central lesions cause muscle fasciculations, while peripheral lesions do not.

Central lesions cause increased reflexes, while peripheral lesions cause decreased reflexes.

Which body part has the largest representation in the motor homunculus?

Hand Signup and view all the answers

What is the MAIN effect of a lesion to the internal capsule?

Dense hemiplegia Signup and view all the answers

What are the clinical signs associated with a lesion of the upper (central) motor neuron, pyramidal tract?

Increased muscle tone and spastic pyramidal signs Signup and view all the answers

What are the characteristics of peripheral (flaccid) paresis/paralysis?

Muscle fasciculations and atrophy Signup and view all the answers

Which area of the brain controls voluntary movements of specific body parts?

Primary motor cortex Signup and view all the answers

What is the primary difference between upper motor neuron (UMN) pyramidal tract lesions and anterior horn cell lesions?

Increased muscle tone vs. muscle fasciculations Signup and view all the answers

Which part of the brain contributes to the control of movements and planning of complex movements?

Premotor cortex, SMA Signup and view all the answers

What signs are indicative of a peripheral (flaccid) paresis/paralysis?

Hyporeflexia/areflexia and muscle fasciculations Signup and view all the answers

Which area of the brain is responsible for visual processing?

Occipital lobe Signup and view all the answers

What is the primary function of the corticospinal tract in the motor system?

Control of voluntary movement Signup and view all the answers