Multiple Choice
Autonomic reflexes are also called ______ reflexes.
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13. The Peripheral Nervous System
Reflex Arcs
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How many synapses are present in a monosynaptic reflex arc?
A
Two
B
None
C
Three
D
One
Verified step by step guidance1
Understand the concept of a monosynaptic reflex arc: A monosynaptic reflex arc involves only one synapse between a sensory neuron and a motor neuron. This is the simplest type of reflex arc.
Recall the structure of a reflex arc: In a monosynaptic reflex, the sensory neuron directly communicates with the motor neuron without involving interneurons.
Identify the role of the synapse: A synapse is the junction where the electrical signal from the sensory neuron is transmitted to the motor neuron via neurotransmitters.
Count the number of synapses: Since the sensory neuron directly connects to the motor neuron, there is only one synapse present in this type of reflex arc.
Confirm the answer: Based on the definition and structure of a monosynaptic reflex arc, the correct answer is 'One.'
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