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Ch 23 VIII - Small Intestine duration 7 minutes 1 second Ch 23 VIII - Small Intestine Ch 23 VIII - Small Intestine	Ch 23 VIII - Small Intestine Ch 23 objectives 17-18. intestine absorption surface duodenum brush things enzymes border food layers circulares plicae modifications portion digestion stomach blood ville villi wall From Ashlee Tietje 6 plays 0
Blood II - Erythrocytes duration 14 minutes 37 seconds Blood II - Erythrocytes Blood II - Erythrocytes	Blood II - Erythrocytes Chapter 17 objectives 4-7. hemoglobin oxygen blood cells carbon cell heme monoxide dioxide structure erythrocytes globin portion iron chains atp protein elements mitochondria platelets From Ashlee Tietje 38 plays 0