2.3 - energy & waste Flashcards
The amount of energy in food is measured in calories,
calorie
The amount of energy it takes to raise the temperature of 1kg of water by 1C.
calorie
Releases the energy from the processed food.
Your digestive system
The part of food used by the body to grow and survive.
nutrients
5 Examples of nutrients
Proteins,fats, carbohydrates,vitamins, and 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 muscular tube that connects the mouth to the stomach.
Esophagus
Food moves through the esophagus and the rest of the digestive tract by waves of the muscle contractions.
peristalsis
a large, hollow organ that stores food.
stomach
An adult stomach can hold about ______ of food and liquid
2 liters
