GENERAL HISTOLOGY

Detailed explanation-1: -Absorption and Transport into Blood. The major products of lipid digestion-fatty acids and 2-monoglycerides-enter the enterocyte by simple diffusion across the plasma membrane.

Detailed explanation-2: -Lipid Absorption The small size of short-chain fatty acids enables them to be absorbed by enterocytes via simple diffusion, and then take the same path as monosaccharides and amino acids into the blood capillary of a villus.

Detailed explanation-3: -Transport of long-chain fatty acids across the cell membrane has long been thought to occur by passive diffusion. However, in recent years there has been a fundamental shift in understanding, and it is now generally recognized that fatty acids cross the cell membrane via a protein-mediated mechanism.

Detailed explanation-4: -The statement that is not true of lipid absorption is (c) Fatty acids and monoglycerides are absorbed passively by diffusion. Fatty acids and monoglycerides are digested to become singular fatty acids by proteins called lipases, which then allow the lipids to be packaged into structures called chylomicrons.

Detailed explanation-5: -Absorption of fat The long chain fatty acids and their monoglycerides, on the other hand, are only sparingly soluble in water and are not readily absorbed. Their absorption is facilitated by the presence of the bile salts with which they form molecular aggregates or micelles.