Upper and Lower Motor Neurons Pathway Quiz

Upper and Lower Motor Neurons Pathway Quiz

Created by
@ResoundingCharoite

Questions and Answers

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

Amyotrophic lateral sclerosis

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

Pseudobulbar palsy

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

Botulinum toxin (Botulism)

What is the function of upper motor neurons?

<p>Transmit information from the brain to the skeletal muscles</p> Signup and view all the answers

Where do the majority of upper motor neurons reside?

<p>Cerebrum</p> Signup and view all the answers

What is the role of lower motor neurons?

<p>Transmit information from the brain to the skeletal muscles</p> 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?

<p>Red nucleus of midbrain</p> Signup and view all the answers

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

<p>Somatic motor neurons</p> Signup and view all the answers

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

<p>Pseudobulbar palsy</p> Signup and view all the answers

Which system is responsible for voluntary movement?

<p>Pyramidal system</p> Signup and view all the answers

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

<p>Lateral corticospinal tract</p> Signup and view all the answers

Which cranial nerve nuclei connect to the Nucleus Ambiguus?

<p>Cranial nerve IX (glossopharyngeal nerve)</p> 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?

<p>Internal capsule</p> Signup and view all the answers

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