Question

upon absorption, fat - soluble vitamins travel through the lymphatic system within ______ before entering the bloodstream. select one\
a. chylomicrons\
b. albumin\
c. cholesterol\
d. opsonin\
e. calbindin

Explanation:

Fat - soluble vitamins, after absorption, are incorporated into chylomicrons. Chylomicrons are lipid - protein complexes that transport fat - soluble substances (including fat - soluble vitamins) through the lymphatic system before they enter the bloodstream. Albumin is mainly for transporting water - soluble substances or some small molecules, cholesterol is a lipid but not the main carrier for fat - soluble vitamins in the lymphatic system, oxytocin is a hormone related to childbirth and lactation, and calcitonin is related to calcium regulation. So the correct carrier for fat - soluble vitamins in the lymphatic system is chylomicrons.

Answer:

A. Chylomicrons