2.3-energy waste Flashcards
(33 cards)
Your body’s way of telling you that it needs food.
Hunger
The amount of energy in food is measured by.
Calories
The amount of energy it takes to raise the temperature of 1 KG of water by 1c.
Calories
releases the energy from the processed food
your digestive system
the parts 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
when you break down food into small molecules.
Chemical digestion
when you put food,such as bread,into your mouth
Ingeston
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 muscles contractions.
peristalsis
a large,hollow organ that stores food
stomach
an adult stomach can hold about 2 liters of food and liquid
2 liters
Enable the stomach to expand and hold large amounts of food
the folds on the inner walls
The cells in these folds produce chemicals that help break down proteins
proteins
this stomach fluid makes the stomach acidic
gastric juice
an enzyme that helps break down proteins in the foods into amino acids
pepsin
a long tube that is connected to the stomach. it is about 7m (23 ft long
small intestine
fingerlike projectiles that cover the folds of the small intestine
villi
nutrients enter the blood through blood vessels in this digestive organ.
small intestine
also know as, the colon.
large intestine
