HUMAN PHYSIOLOGY
DIGESTION AND ABSORPTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
micelles released TG into intestinal cell
|
|
|
TG will be repackaged with phospholipids, cholesterol, fat-soluble vitamins and with Apo-E into nascent chylomicrons
|
|
|
Chylomicrons are released by exocytosis from intestinal cell
|
|
|
Chylomicrons move through lymphatic system and blood stream to tissues
|
|
|
In the blood circulation, nascent chylomicrons receive ApoC-II and Apo-E from LDL to form mature chylomicrons
|
Detailed explanation-1: -Thus, the chylomicrons enter the lacteals and enter into lymphatic circulation. The lymphatic system is a system similar to the circulatory system in that it contains vessels that transport fluid. However, instead of blood, the lymphatic system contains a clear fluid known as lymph.
Detailed explanation-2: -Nearly all dietary lipid is transported in chylomicrons from the gut to the blood through the lymphatic system by entering specialized lymphatic vessels, referred to as lacteals, in the villi of the intestine (Fig. 1).
Detailed explanation-3: -…the blood are known as chylomicrons and consist largely of triglycerides; after absorption from the intestine, they pass through lymphatic channels and enter the bloodstream through the thoracic lymph duct.
Detailed explanation-4: -Lipoprotein Lipase (LPL) (19) This enzyme hydrolyzes the triglycerides carried in chylomicrons and VLDL to fatty acids, which can be taken up by cells. The catabolism of triglycerides results in the conversion of chylomicrons into chylomicron remnants and VLDL into IDL.