Question

Arrange the steps below in the correct order to describe how a reflex occurs:

A relay neuron sends a signal to a motor neuron.

A sensory neuron sends a signal to the spinal cord.

A muscle receives a signal to contract.

A bone moves.

A receptor detects a signal.

Answer 1

The following is the order of events that takes place during a reflex arc system:

• A receptor detects signal
• A sensory neuron then sends signal to the spinal cord
• The relay neuron then sends signal to a motor neuron
• The signal the muscle begins to contract
• Thereby the bone moves

The reflex actions of the bone in a body follows a sequence of action in a system, the signals are first transferred to the brain via the spinal cord which then sends appropriate signals to receive the effect.