19 Questions
Which tract modulates overall muscle tone in the body?
Reticulospinal tract
Which cranial nerve is involved in controlling facial expressions?
Cranial nerve VII
What is the term for the uncontrolled muscle twitching associated with lower motor neuron symptoms?
Fasciculations
Which motor neuron type is affected by polio?
Lower motor neurons
What is the result of a lesion in the lateral corticospinal tract?
Increased muscle tone
Which tract is responsible for controlling the movement of the extremities?
Corticospinal tract
What is the term for the increased passive resistance associated with upper motor neuron symptoms?
Hypertonicity
Which disease affects both upper and lower motor neurons?
ALS
What is the term for the abnormal gait caused by foot drop due to loss of dorsiflexion?
Steppage gait
Which tract facilitates extensor muscle tone in the legs?
Lateral vestibulospinal tract
What are the two types of herniation mentioned in the text?
Subfalcine and transtentorial herniation
Which of the following is NOT a type of hematoma?
Intracerebral
What is the correct pathway for CSF according to the text?
SC - pia matter - subarachnoid space - arachnoid space - meningeal layer of dura - epidural fat - ligaments
Which tract primarily controls distal muscles of hands and feet?
Lateral cortical spinal tract
What type of posturing is typically seen with lesions above the level of the red nuclei?
Decorticate posturing
Which tract facilitates flexor muscle tone?
Rubrospinal tract
What is the primary function of the anterior cortical spinal tract?
Controls axial muscles
Which tract divides and crosses at the spinal level?
Anterior cortical spinal tract
Which of the following is NOT a function of the rubrospinal tract?
Controls autonomic functions
Test your knowledge on motor tracts such as the reticulospinal tract and corticobulbar tract, as well as the function of the facial nuclei in controlling facial expressions. Learn about the pathways involved in modulating reflexes and muscle tone in the nervous system.
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