Energy and waste Flashcards
(32 cards)
When you put food, such as bread in your mouth
Ingestion
An enzyme, in your mouth, that helps breakdown carbohydrates
Saliva
A large, hollow organ that stores food
stomach
Break down pieces of food into small molecules
Chemical Digestion
This stomach fluid makes the stomach acidic
Gastric juice
The 4 steps of digestion
ingestion, digestion, absorption, and elimination.
5 Examples of Nutrients
Proteins, fats, carbohydrates, vitamins, and minerals
Releases the energy from the processed food
Your digestion system
Enable the stomach to expend and hold large amounts of food
The folds on the inner walls
The cells in these folds produce chemical that help break down
Proteins
The amount of energy in food measured in Calories
Calorie
The amount of energy it takes to raise the temperature of 1 kg of water by 1 b
Calorie
The parts of food used by the body to grow and survive
Nutrients
When you chew, mash, and grind food with your teeth and tongue
Mechanical Digestion
A muscular tube that connects the mouth to the stomach
Esophagus
the mechanical and chemical breakdown of food into small particles and molecules that your body can absorb and use
Digestion
Food moves through the esophagus and the rest of the digestive tract by waves of muscle contractions
Peristalsis
An adult stomach can hold about ____of food and liquid
2 Liters
a long tube that is connected to the stomach. It is about 7 m (23 ft) long
Small intestine
an enzyme that helps break down the proteins in foods into amino acids
Pepsin
finger like projections that cover the folds of the small instestine
Villi
Nutrients enter the blood through blood vessels in the digestive organ
Small intestine
Also known as the colon
Large intestine
is about 1.5 m (5 ft) long. It has a larger diameter (about 5 cm or 2 in) than the small intestine
Large intestine
