Upper and Lower Motor Neurons Pathway Quiz

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Which condition is characterized by a decrease in muscle size due to Motor Neuron lesions?

Spinal muscular atrophy

Amyotrophic lateral sclerosis (correct)

West Nile virus

Multiple sclerosis

What specific type of upper motor lesion is produced by damage to the corticobulbar pathway?

Diabetic neuropathy

Guillain-Barre syndrome

Cauda equina syndrome

Pseudobulbar palsy (correct)

What is the most common cause of acute flaccid neuromuscular paralysis?

B12 deficiency

Botulinum toxin (Botulism) (correct)

Fredericks ataxia

Polio myelitis

What is the function of upper motor neurons?

Transmit information from the brain to the skeletal muscles Signup and view all the answers

Where do the majority of upper motor neurons reside?

Cerebrum Signup and view all the answers

What is the role of lower motor neurons?

Transmit information from the brain to the skeletal muscles Signup and view all the answers

Where do some of the motor neurons that project to proximal muscles travel through before crossing over in the spinal cord?

Red nucleus of midbrain Signup and view all the answers

Which type of motor neurons are subdivided into alpha, beta, and gamma motor neurons?

Somatic motor neurons Signup and view all the answers

A lesion of the corticobulbar tract can result in what condition?

Pseudobulbar palsy Signup and view all the answers

Which system is responsible for voluntary movement?

Pyramidal system Signup and view all the answers

In the pyramidal system, what are the important tracts for voluntary movement?

Lateral corticospinal tract Signup and view all the answers

Which cranial nerve nuclei connect to the Nucleus Ambiguus?

Cranial nerve IX (glossopharyngeal nerve) Signup and view all the answers

Where do upper motor neurons from the right primary motor cortex pass through on their way to target organs?

Internal capsule Signup and view all the answers

Upper and Lower Motor Neurons Pathway Quiz

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Questions and Answers

Which condition is characterized by a decrease in muscle size due to Motor Neuron lesions?

What specific type of upper motor lesion is produced by damage to the corticobulbar pathway?

What is the most common cause of acute flaccid neuromuscular paralysis?

What is the function of upper motor neurons?

Where do the majority of upper motor neurons reside?

What is the role of lower motor neurons?

Where do some of the motor neurons that project to proximal muscles travel through before crossing over in the spinal cord?

Which type of motor neurons are subdivided into alpha, beta, and gamma motor neurons?

A lesion of the corticobulbar tract can result in what condition?

Which system is responsible for voluntary movement?

In the pyramidal system, what are the important tracts for voluntary movement?

Which cranial nerve nuclei connect to the Nucleus Ambiguus?

Where do upper motor neurons from the right primary motor cortex pass through on their way to target organs?

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