Medicine & health
Erasistratus [b. Chios (Greek Aegean island), c. 304 bce, d. Mycale (Samsum Daği, Turkey), c. 250 bce] performs public dissections. He declares that veins and arteries are connected and that arteries carry air from the lungs to the heart, where they become "animal spirits" that are carried from the heart to the rest of the body, while the veins carry blood. He observes that the nerves are connected to the brain and believes that there is a "nervous spirit" carried by them to the body. See also 450 bce Medicine & health; 1240 Medicine & health.




