18 Questions
Which part of the CNS is responsible for determining appropriate movement and the results?
Basal ganglia
Which part of the brain is responsible for initiating the action of specific motor units?
Motor cortex
What type of reflex is the muscle spindle reflex?
Monosynaptic
In the muscle spindle reflex, what happens when the stretch receptor in the spindle is activated?
Increase in action potentials
Which type of motor neuron innervates extrafusal fibers?
Alpha motor neurons
What is the function of gamma (γ) motor neurons in muscle spindles?
Contract intrafusal fibers
What is the main difference between monosynaptic and poly- or multisynaptic reflexes?
The number of synapses involved
Reciprocal inhibition in motor control refers to:
Simultaneously exciting one muscle while inhibiting its antagonist
Which sensory receptor is responsible for detecting muscle stretch?
Muscle spindles
In motor control, what is the function of lower motor neurons?
Initiate muscle contraction
In ipsilateral reflexes, the sensory input and motor output occur on:
The same side of the body
The integration of sensory information and generation of motor responses in reflex actions primarily occurs in the:
Spinal cord
What is the main difference between monosynaptic and polysynaptic reflexes?
Monosynaptic reflexes involve a single synapse, while polysynaptic reflexes involve multiple synapses.
In a monosynaptic reflex arc, where does the synaptic transmission occur?
Between the sensory neuron and the motor neuron
Which of the following statements is true about ipsilateral reflexes in motor control?
Ipsilateral reflexes involve a response on the same side of the body as the stimulus.
What role do sensory receptors play in motor control?
Sensory receptors detect changes in the external environment and convert them into neural signals.
How does reciprocal inhibition contribute to motor control?
Reciprocal inhibition relaxes antagonist muscles during muscle contraction.
What is a key function of motor neurons in motor control?
Motor neurons initiate muscle contractions by transmitting signals from the brain.
Test your knowledge on motor control with a focus on efferent control, autonomic versus somatic control, spinal versus cranial integration, reflex development, innate versus learned reflexes, number of neurons in pathways, and types of reflex pathways. Explore topics on autonomic motor control and visceral reflexes, including the integration location and conscious control of functions like urination and defecation.
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