11 Questions
Which structure is responsible for detecting changes in muscle length and initiating the stretch reflex?
Muscle spindle
Which part of the brain is responsible for coordinating voluntary movements and sending signals to the spinal cord?
Primary motor cortex
What type of motor neurons innervate extrafusal muscle fibers and are responsible for muscle contraction?
Alpha motor neurons
Which part of the motor system is involved in the coordination and smooth execution of movements, as well as in maintaining posture and balance?
Cerebellum
Which area of the brain is responsible for initiating movements and activating lower motor neurons in the spinal cord?
Primary motor cortex (area 4)
What is the role of the premotor cortex (area 6) in the motor system?
Coordination of movements
Which part of the brain is responsible for coordinating voluntary movements and sending signals to the spinal cord?
Motor homunculus
What is the function of the frontal lobe in the motor system?
Coordinates skilled movements
Which neuronal pathways secrete neurotransmitter substances in the basal ganglia to balance action between excitatory and inhibitory neurotransmitters?
Subthalamic nucleus
What is the role of the basal ganglia in the motor system?
Plan actions
Which part of the brain is responsible for regulating subconscious movements such as writing and cutting paper?
Putamen
Test your knowledge of the motor system and reflexes in human physiology with this quiz based on the lecture material by Pongrung Chancharoen. Explore topics such as the motor pathways, types of motor neurons, motor units, muscle spindle function, and commonly occurring reflexes.
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