Question

Endocrine function of the pancreas include which of the following?

		production of insulin
		production of glucagon
		production of digestive enzymes
		A and B are functions
		A, B and C are functions

what will most likely to happen to dipeptides and tripeptides.

		digested to amino acids
		continue to the large intestine for absorption
		absorbed by lacteals
		All of the above are likely to happen.

Amylase is an enzyme involved in the hydrolysis of foods such as

		chicken and beef
		bread and potatoes
		cane sugar and fructose
		fats and oils

1. which of the following takes place in the small intestine?

   		digestion of pepsin, trpsin and chymotrypsin
   		digestion by trypsin and chymotrypsin
   		digestion by salivary amylase and carboxypeptidases
   		digestion of proteins on a whole.

Answer 1

1. A and B are functions

Endocrine Function: The endocrine component of the pancreas consists of islet cells (islets of Langerhans) that create and release important hormones directly into the bloodstream. Two of the main pancreatic hormones are insulin, which acts to lower blood sugar, and glucagon, which acts to raise blood sugar.

2. DIGESTED TO AMINOACIDS

Many dipeptides and tripeptides are transported from the intestinal lumen (inside the intestines) into the cells of the intestinal wall (enterocyte), then broken down to amino acids prior to being absorbed into the bloodstream. Very few dipeptides and tripeptides enter the bloodstream intact.

3. BREAD AND POTATOES

Amylase is present in the saliva of humans and some other mammals, where it begins the chemical process of digestion. Foods that contain large amounts of starch but little sugar, such as rice and potatoes, may acquire a slightly sweet taste as they are chewed because amylase degrades some of their starch into sugar.

4. DIGESTION OF PROTEIN AS A WHOLE

Protein Absorption

Active transport mechanisms, primarily in the duodenum and jejunum, absorb most proteins as their breakdown products, amino acids. Almost all (95 to 98 percent) protein is digested and absorbed in the small intestine. The type of carrier that transports an amino acid varies.Protein digestion begins with the action of an enzyme called pepsin. ... Pepsin acts on protein molecules by breaking the peptide bonds that hold the molecules together. Digestion of protein is completed in the small intestine by the pancreatic enzymes trypsin, chymotrypsin, and carboxypeptidase.