2.3-energy and waste Flashcards
The amount of energy in food is measured in calories
calorie
The amount of energy it takes to raise the temp of 1 kg of water by 1c
calorie
Releases the energy from the processed food
your digestive system
5 Examples of Nutrients
proteins,fats,carbohydrates,vitaminsand minerals
the mechanical and chemical breakdown of food into small particles and molecules that your body can absorb and use
Digestion
The 4 steps of digestion
ingestion,digestion,absorption, and elimination
when you chew, mash and grind food with your teeth and tongue
mechanical Digestion
break down pieces of food into small molecules
chemical digestion
when you put food, such as bread, into your mouth
ingestion
an enzyme, in your mouth, that helps break down carbohydrates
saliva
A musscular tube that connets the mouth to the stomach
esophagus
food moves through the esophagus and the rest of the digestive tract by waves of muscle contraction
peristalsis
a large hollow organ that stores food
stomach
An adult stomach can hold about____________of food and liquid
2 liters
