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1. The receptor reacts to a stimulus. 2. The sensory neuron conducts the afferent impulses to the CNS. 3. The integration center consists of one or more synapses in the CNS. 4. The motor neuron conducts the efferent impulses from the integration center to an effector. 5. The effector, muscle fibers or glands, respond to the efferent impulses by contraction or secretion a product, respectively.

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Define reflex arc and list its elements?

A Reflex Arc is a neural pathway for reflexes that is involved in CNS and PNS. The five elements are: 1. Sensory receptor (Reacts to stimuli) 2. Sensory or Afferent neuron (takes information to the CNS) 3. Integration Center (Spinal Cord or Brain processes information) 4. Motor or Efferent neuron (carries signal away from CNS) 5. Effector organ (muscles or glands)


How does effector relate to reflex arc?

An effector is a part of the body (such as a muscle or gland) that carries out the response in a reflex arc. In a reflex arc, when a stimulus is detected by a sensory receptor, a message is sent via a sensory neuron to the spinal cord, where it is processed, and then a message is sent via a motor neuron to the effector causing a response.


What is the flow of information in a spinal reflex arc in the correct order?

The reflex arc includes the sensory neuron (sensory intake) to the motor neuron (motor response). This two neuron arc is the fastest. Many times an interneuron at the level of the spinal cord is involved. It passes information to the brain more slowly. It is like an "incident report".


What are the five parts of a reflex arc?

Summarized below are the 5 major components of the reflex arc: 1. Receptor 2. Afferent (sensory) neurons 3. Association neuron 4. Efferent (motor) neurons 5. Effector


A reflex arc begins with the stimulation of a what?

A reflex arc begins with the stimulation of a sensory receptor such as those on the skin. The stimulus is then passed as an electrical impulse along sensory, relay and motor neurones (by-passing the brain) before reaching an effector orgen, like a muscle, which then responds to the stimulus.

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