More ideas from Tiffany
3 free printables for college students. Do yourself a favor, set yourself up for a great semester, and download these now!

My Free Printables Weekly Planner (x) Semester Schedule (x) Time Management Worksheet (x) Assignment Planner (x) Assignment List (x)

arteries & veins

Alcmaeon of Croton was an early Greek medical writer and philosopher-scientist (ca. He distinguished arteries from veins and thought that the brain was the center of intellectual activity.