Question

The digested food from the small intestine reach through hepatic portal to the liver so as to remove excess of

• A. Fatty acids
• B. Glucose
• C. Aminoacids
• D. Both (a) and (c)

Answer 1

The correct option is D Both (a) and (c)

The portal venous system is responsible for directing blood from parts of the gastrointestinal tract to the liver. Substances absorbed in the small intestine travel first to the liver for processing before continuing to the heart. As a storehouse the liver collects from the bloodstream chemicals that are in excess of the amount needed by the body at any given time. All monosaccharides except glucose, for instance, are removed and converted into glycogen by the liver. This glycogen is stored, then reconverted as needed to keep the glucose level in the blood stream constant. The fat-soluble vitamins A, D, E, and K are also stored in the liver. Because the body cannot store amino acids, any excess must be deaminized or broken down into smaller molecules. Some of these molecules are converted to fats, while others are eliminated from the body. The triacylglycerols, along with absorbed cholesterol and phospholipids, are packaged into protein-covered fat droplets,called chylomicrons. After a meal rich in fats, the great number of chylomicrons in the blood may give the plasma a turbid, milky appearance for a few hours. Chylomicrons transport fats to the liver and other tissues.