JH+diestive+system+notes

Why do we eat? - energy - we consist of matter so we have to consume matter because we are constantly losing cells Saturated fat is animal fat - bad fat Trans fat is man made fat - really bad fat Cholesterol - associated with bad things can cause heart disease but we still need it in our diet sodium - too much of it is bad but we do need it in our diet
 * Fat** - is is used to make all of the cells in your body

Why do we need to eat protein? everything that the cells do is powered by protein because it is made out of amino acids and the body takes the amino acids from other foods and makes the bodies own protein. - animals - wheat - rice - eggs

vitamin A - vision vitamin C - involved in making a protein called collagen 25% of human body fills up the empty space Calcium - builds strong bones Iron - red blood cells that carry oxygen require iron

How do the molecules get into the body? they start in the mouth and their the food get physically broken down then it goes to the stomach there it is mechanical breakdown by acid in the small intestine the food finally crosses over into the cells the food that is not absorbed by the small intestine is left to the large intestine to sit but the water is absorbed