Question

Label the following diagram:

• A. 1- Receptor, 2-spinal cord, 3-sensory neuron, 4-afferent neuron, 5-interneuron, 6-effector
• B. 1- Spinal cord, 2-receptor, 3-sensory neuron, 4-interneuron, 5-motor neuron, 6-effector
• C. 1-spinal cord, 2-effector, 3-sensory neuron, 4-afferent neuron, 5-interneuron, 6-receptor
• D. 1-effector, 2-spinal cord, 3-sensory neuron, 4-afferent neuron, 5-interneuron, 6-receptor

Answer 1

The correct option is B

1- Spinal cord, 2-receptor, 3-sensory neuron, 4-interneuron, 5-motor neuron, 6-effector

The diagram shows the reflex arc. A stimulus is received by the receptor. The signal is passed to the spinal cord by sensory neuron. The stimulus is passed to interneuron which gives it to the spinal cord. The spinal cord processes the information and sends it back to the effector muscle via the interneuron and the motor neuron.