caption death_date death_place birth_place image_size nationality field birth_date known_for article_title name
amato lusitano 1568 1511 thessaloniki , ottoman empire castelo branco , kingdom of portugal 150px portuguese physician 1511 studied the circulation of the blood amato lusitano
 amato lusitano
amato lusitano

joão rodrigues de castelo branco , better known as amato lusitano and amatus lusitanus -lrb- 1511 -- 1568 -rrb- , was a notable portuguese jewish physician of the 16th century .
like herophilus , galen , ibn al-nafis , michael servetus , realdo colombo and william harvey , he is credited as making a discovery in the circulation of the blood .
he is said to have discovered the function of the valves in the circulation of the blood .
