If organ systems failed to work together your body would not work because your heart pumps blood in order for your whole body to work.
D they will learn how to roll over, crawl and eventually walk
A Muscle Contraction Is Triggered When an Action Potential Travels Along the Nerves to the Muscles. Muscle contraction begins when the nervous system generates a signal. The signal, an impulse called an action potential, travels through a type of nerve cell called a motor neuron.
Wait for emergency vehicles and keep patients calm and talking
Is it multiple choice? what are the choices?