In a simple reflex arc, which neuron type directly stimulates a muscle to contra

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Question: In a simple reflex arc, which neuron type directly stimulates a muscle to contract?

Options:

Correct Answer: Motor neuron

Solution:

In a simple reflex arc, the motor neuron directly stimulates a muscle to contract, resulting in a reflex action.

In a simple reflex arc, which neuron type directly stimulates a muscle to contract?

In a simple reflex arc, which neuron type directly stimulates a muscle to contract?

Step 1: Understand what a reflex arc is. It is a pathway that controls a reflex action.
Step 2: Identify the types of neurons involved in a reflex arc: sensory neurons, interneurons, and motor neurons.
Step 3: Recognize that sensory neurons detect a stimulus and send signals to the spinal cord.
Step 4: Know that interneurons in the spinal cord process the information and connect to motor neurons.
Step 5: Identify that motor neurons are responsible for sending signals to muscles.
Step 6: Conclude that the motor neuron directly stimulates a muscle to contract, causing the reflex action.

Reflex Arc – A neural pathway that controls a reflex action, involving sensory neurons, interneurons, and motor neurons.
Motor Neuron – A type of neuron that transmits impulses from the central nervous system to muscles, causing contraction.