2.3 energy and waste Flashcards
the amount of energy in food meaured in calories.
calorie.
releases the energy from prossesd food.
your digestive system.
the amount of energy it takes to rise the tempture of 1 kg of water by 1 c.
calorie.
the parts of food used by the the body to grow and survive.
nutironts.
5 examples of nutrients.
protiens, fats, carbins, vidamins, and minerels.
the mecanical and chemecal break down of food into small particals and molecules that your body can absorb and use.
digestion.
the four steps of digestion.
ingetion, digestion, aborbtion, and elimination.
when you chew, mash and grind food
mecanical digestion.
breakdown peises of food into small molecules
chemicle digestion
when you put food, such as bread, into your mouth
ingestion
an ezyamen, in your mouth, that helps break down carbohyates.
saliva
a muscular tube that connects the mouth to the stomech
esopheguse
food moves though the esopheguse and the resst of the digestive track by waves of musle contractions
peristalsis
a large, hollow organ the stores food and water
the stomch
an adult stomch can hold about blank of food and liquid
2 literters
enables the stomch to expand and hold a large amounts of food
folds on the iner walls
the cells in these folds produce chemicles breakdown
protiens
gastric juice
pepsin
small intestines
