Number the steps from when a stimulus is received to when the body reacts. ___ Motor neurons cause muscles to contract so the body can react to the stimulus.
___ The brain processes the information through interneurons.
___ Interneurons transfer response information to motor neurons.
___ Sensory neurons carry stimulus information to the brain or spinal cord.

1. the energy lost to disorder metabolism     -entropy

2. related to or possessing motion potential     -kinetic

3. all of the chemical reactions in an organism required for maintenance of the processes of life entropy     -metabolism

4. possible; ability to go into action or perform work kinetic     -potential

5. the study of energy and its transformations thermodynamics     -thermodynamics

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.