Question
What are the component parts of simple reflex arc?
Answer
The component parts of a simple reflex arc are:
- Sensory Receptor: A specialized cell or group of cells that detects a stimulus and converts it into an electrical signal (nerve impulse).
- Sensory Neuron: A nerve cell that transmits the electrical signal from the sensory receptor to the central nervous system (spinal cord or brainstem).
- Interneuron: A nerve cell located in the spinal cord or brainstem that receives the incoming signal from the sensory neuron and sends a response signal to the motor neuron.
- Motor Neuron: A nerve cell that transmits the response signal from the central nervous system to the effector (muscle or gland).
- Effector: A muscle or gland that responds to the signal from the motor neuron by contracting (in the case of a muscle) or secreting a substance (in the case of a gland).
