2.3 energy and waste Flashcards
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 1kg of water by 1*C
calorie
releases the energy from the processed food
your digestive system
the parts of food used by your body
nutrients
5 examples of nutrients
protein fats carbohydrates vitamins and minerals
the mechanical ans chemical breakdown of food
digestion
the 4 steps of digestion
ingestion digestion absorption and elimination
when you grind food with your mouth
mechanical digestion
breaks down food
chemical digestion
an enzyme in your mouth
saliva
a muscular tube that leads to your stomach
esophagus
the waves of muscle contractions
peristalsis
hallow organ that stores food
stomach
an adult stomach can hold about—————of food
2 litters
lets the stomach to expand
inner folds
the cells produce chemicals that help break down________
protiens
makes the stomach acid
gastric juice
helps break down proteins into amino acids
pepsin
a tube that is about 23 feet long
small intestine
finger like projections
villi
nutrients enter the blood through this organ
small intestine
also known as the colon
large intestine
also known as the colon
large intestine
