Hepatic lobule – hexagon, central vein, portal triads; blood flow LIVER (HIGH YIELD) Hepatic lobule – hexagon, central vein, portal triads; blood flow Portal lobule – triangle, central portal triad, 3 central veins; bile flow Hepatic acinus – diamond, 2 central veins, 2 portal triads; blood exposure - zone 1: nearest O2, nutrients, toxins - zone 3: farthest O2, nutrients, toxins Ito cells – space of Disse that contain many lipid droplets and vacuoles; store vitamin A. (139)

Proximal convoluted tubule simple cuboidal, fuzzy, pink Distal convoluted tubule simple cuboidal, less pink -Macula densa – detects Na+; at vascular pole Loop Henle simple squamous PICTURES NOT IN BOOK