Multiple Choice
Which of the following reflexes is particularly important in maintaining balance and often accompanies the flexor reflex in weight-bearing limbs?
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13. The Peripheral Nervous System
Introduction to Reflex Arcs
Multiple Choice
In a reflex arc, the __________ transmits afferent impulses to the central nervous system.
A
receptor
B
effector
C
integration center
D
sensory neuron
Verified step by step guidance1
Understand the components of a reflex arc: A reflex arc typically consists of five main components: receptor, sensory neuron, integration center, motor neuron, and effector.
Identify the role of each component: The receptor detects the stimulus and initiates the impulse. The sensory neuron transmits the afferent impulse to the central nervous system. The integration center processes the information. The motor neuron carries the efferent impulse to the effector, which then produces a response.
Focus on the sensory neuron: In the context of the reflex arc, the sensory neuron is responsible for transmitting afferent impulses from the receptor to the central nervous system.
Clarify the term 'afferent': Afferent impulses are signals that travel towards the central nervous system, as opposed to efferent impulses, which travel away from the central nervous system.
Conclude with the correct component: Based on the roles of each component, the sensory neuron is the correct answer as it transmits afferent impulses to the central nervous system in a reflex arc.
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