Two ways for nutrients to get to blood?
1. Protein & Sugars gets absorbed through digestive system, enters hepatic portal system (directs blood from GI to liver), and then gets distributed to rest of the body
2. Lipids get broken down into fatty acids & glycerol. then pass through endoplasmic reticulum of intestinal cells where then get reassembled. Before leaving the cell, triglycerides become coated with protein (which are called CHYLOMICRONS). Chylomicrons (aka triglycerides in guise) then enter lymphatic capillaries called LACTEALS, which go to lymphatic system! (via thoracic duct)