(2.3 Energy And Waste) Flashcards
(33 cards)
When you put food in your mouth.
Ingestion
The amount of energy in food is measured in Calories.
Calorie
The amount of energy it takes to raise the temperature of 1 kg of water by 1 C.
Calorie
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 breackdown of food into small particales 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, in 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 by waves of muscle contracts.
Peristalsis
A large, hollow organ that stores food.
Stomach
A adult stomach can hold about _________ of food and liquid.
2 Liters
Enable the stomach to expand and hold large amounts of food.
The folds on the linner walls
The cells in these folds produce chemicals that help break down ___________.
Protiens
This stomach fluid makes the stomach acidic.
Gastric Juice
An enzyme that helps break down the protiens in foods into amino acids.
Pepsin
A long tube that is connected to the stomach. It is about 7m (23 ft) long.
Small Intestine
Fingerlike projections that cover the folds of the small intestine.
Villi
Nutients enter the blood through blood vessels in this digestive organ.
Small Intestine
Also known as, the colon.
Large Intestine.
