View Full Version : Where does the food we eat go? (srs, read)

03-15-2012, 02:06 PM
So your body only turns and stores excess carbs, proteins, and fats into fat right? but where do you keep all these things after you eat?

For example, if I drink something with 30g of carbs and eat a burger with 20g of fat and 20g of protein and ITS NOT EXCESS CALORIES, where does this stay while your body uses it up? you will obviously use it but not at once.

Does it go to the blood? stay in the stomach?

03-15-2012, 02:13 PM
Each substrate is handled differently but the short answer is that the body is constantly storing and releasing energy in the forms of fats, glycogen--glucose etc.

03-15-2012, 02:21 PM
Upon digestion
(1 min) mouth- chewing breaksdown proteins and fibres, releasing nutrients.
- salvary amylase begins the digestion of starch (carbs)
- linguinallipase begins limited fat breakdown
(1-2 hrs) stomach - churning occurs which mixes the food content with gastic juices to creat a mixture known as chyme
- HCL is released activating pepsinogen which converts to pepsin, denaturing protein into single amino strands
(7-8hrs) small intestine - most of the nutrients are abosrbed here
- pancreatic amylase breaks down starch (carbs) into poly and di saccarides, further into monosaccarides which are absorbed by the villi
- (fats) bile mixes with fat to create emulsion. Pancreatic lipase begins the digestion of fat. Long and medium chainfaty acids are aborbed into the villi and transported via the limphatic system to the liver. Monogylcerides are converted into micelles and are repackages as chylomicrons and are absorbed into the blood
-(protein) peptidase releases amino acids from peptides for absorbtion. via villi and lymphatic system.
(8hr+) large intestine recycles and reabsorbes water and electrolytes, allows for the passage of waste