bio 1500 huh? huh?
no ptyalin is not secretes by the cells in the stomach
Ptyalin is an enzyme, which means that it is made up of proteins. When a protein enters the stomach, it is denatured by HCL, which is a kind of acid. This results in the Ptyalin no longer being effective.
Breakdown of proteins begins in the stomach.
In the stomach
You have probably only one important enzyme, that is present in saliva. That is called as 'Ptyalin'. This enzyme brakes down the carbohydrates to sugar. This enzyme continue to act in stomach also for some time, till acid in the stomach makes the enzyme ineffective.
D. hydrolysis of proteins
stomach, the stomch digests proteins
besause it has strach in it
carbohydrate digestion doesn't occur in the stomach and the large intestine.
Carbohydrate digestion happens mostly in the mouth and esophagus, surprisingly. This combines with the fact that the enzymes in saliva that cause digestion stop functioning when they reach the stomach.
The mouth and the stomach.
Thet chew them and then the stomach churns them up and they are then digested in the small intestine.