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.
When speaking about calories, It depends on the individual themselves. If they are active and work around a lot, They need more calories to sustain nutrients in their bodies. If they are someone who lounges around and does not work much, they need lesser calories because the more calories someone has, the more they will need to burn. Doctors say on average, an 8-13 year old is expected to intake around 1,800-2,200 Calories a day.
Electronic tablets and cell phones
You move them to a safe place and then proceed to call 911