16 Questions
Which disease is characterized by hyporeflexia and muscle atrophy?
Amyotrophic lateral sclerosis (ALS)
Which disease is characterized by spasticity and exaggerated reflexes?
Stroke (cerebrovascular accident)
Where are Lower Motor Neuron (LMN) lesions located?
At or below the level of the spinal cord
Where are Upper Motor Neuron (UMN) lesions located?
In the brain or descending pathways
What is a distinctive feature of Lower Motor Neuron (LMN) lesions?
Direct effects on muscles and reflexes
What is a distinctive feature of Upper Motor Neuron (UMN) lesions?
Indirect effects on muscle activity and reflexes
Which disease is characterized by muscle weakness, fasciculations, and fibrillations?
Amyotrophic lateral sclerosis (ALS)
Which disease is characterized by weakness or paralysis usually on one side of the body?
Stroke (cerebrovascular accident)
Which part of the central nervous system regulates motor activities?
Brain
What is the function of the spinal cord in the central nervous system?
Facilitates communication between the brain and peripheral nerves
Which process involves sensory receptors detecting stimuli and transmitting signals to the spinal cord or brain?
Afferent (Sensory) Neural Transmission
What is the function of efferent (motor) neural transmission?
Initiate and control voluntary movements
What part of the nervous system carries motor commands to lower motor neurons?
Descending pathways
What is the primary function of ascending pathways in neural transmission?
Carry sensory information to higher brain centers
What part of the central nervous system mediates reflexes?
Spinal Cord
What part of the central nervous system coordinates sensory information?
Cerebellum
Learn about the roles and parts of the central nervous system in the processing of afferent and efferent neural transmission. Also, understand the presentation and symptoms of lower motor neuron versus upper motor neuron diseases.
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