Disorders of the pyramidal tracts, such as a stroke, are characterized by:
A) Paralysis
B) Hypotonia
C) Muscle rigidity
D) Involuntary movements
Ans: A
Feedback:
Disorders of the pyramidal tracts (e.g., stroke) are characterized by spasticity and paralysis, whereas those affecting the extrapyramidal tracts (e.g., Parkinson disease) by involuntary movements, muscle rigidity, and immobility without paralysis. Hypotonia is a condition of less than normal muscle tone, hypertonia or spasticity is a condition of excessive tone, and paralysis refers to a loss of muscle movement. Upper motor neuron (UMN) lesions produce spastic paralysis and lower motor neuron (LMN) lesions flaccid paralysis.
You might also like to view...
Which organism below produces a protein called Protein A that binds to the Fc portion of IgG?
A) Hemophilus influenzae B) Chlamydia C) Streptococcus pyogenes D) Staphylococcus aureus E) Streptococcus pneumoniae
Polymyalgia is pain in several muscle groups
Indicate whether the statement is true or false
The most popular psychoactive drug in the world is
A) alcohol. B) nicotine. C) caffeine. D) cocaine.
A patient in the psychiatric ward is suddenly unable to speak or refuses to speak. The medical term for this condition is
A. psychosis B. paranoia C. affective D. catatonia E. mutism