Which answer choice lists the correct order of a reflex arc?
A) Receptor, efferent neuron, integrating center, afferent neuron, effector
B) Receptor, afferent neuron, integrating center, efferent neuron, effector
C) Effector, afferent neuron, integrating center, efferent neuron, receptor
D) Receptor, afferent neuron, efferent neuron, effector, integrating center

Question

Quizplus · Accepted Answer

A reflex occurs in what is called a reflex arc that involves the following anatomy in order: Receptor: The dendrite of a neuron receiving the stimulus Afferent neuron (sensory) that has an action potential carrying the signal to the CNS. Integrating center: either the brain or spinal cord where the signal is received from the afferent neuron and conducted to a motor neuron. This may or may not require an interneuron. Efferent neuron (motor) that has an action potential carrying a signal away from the CNS. Effector: the structure causing the effect. If this structure is skeletal muscle, it is called a somatic reflex. If the effector is a gland or smooth muscle, it is called an autonomic reflex.

Which Answer Choice Lists the Correct Order of a Reflex