What role do micelles and chylomicrons play in fat absorption?
What will be an ideal response?
Biliary components facilitate absorption of these fatty end products through formation of micelles. Once the micelles reach the luminal membranes of the epithelial cells, the monoglycerides and free fatty acids passively diffuse from the micelles through the lipid component of the epithelial cell membranes to enter the interior of these cells. Once within the interior of epithelial cells, the mono glycerides and free fatty acids are resynthesized into triglycerides and move into chylomicrons. The large, coated fat droplets, known as chylomicrons, enter the central lacteals rather than the capillaries because of the structural differences between these two vessels.
You might also like to view...
________ cells are the only T lymphocytes that can directly attack and kill other cells.
Fill in the blank(s) with the appropriate word(s).
Which muscle responds to increased parasympathetic stimulation?
A dilator pupillae B. Sphincter pupillae C. Ciliary body D. Levator palpebrae superioris
Which is false regarding the somatic nervous system (SNS)?
A. The SNS is part of both the CNS and the PNS. B. The SNS innervates skeletal muscle fibers. C. The SNS is under voluntary control. D. The SNS uses motor and sensory neurons. E. The SNS is activated by visceral sensory neurons.
Blood is pumped into the pulmonary circuit from the
A) left atrium. B) left ventricle. C) right atrium. D) right ventricle.