Bartolomeo Eustachio. Portrait of Bartolomeo Eustachio (1524-74), Italian anatomist. Eustachio researched the teeth, ear, kidneys, uterus, cranial nerves and muscles of the head and neck. He discovered the adrenal glands, a valve in the heart and a tube linking the inner ear to the throat. The heart valve and ear tube were named 'Eustachean' after him. In 1564 he published Opuscula anatomica (Anatomical Works). Another work Tabulae Anatomicae (Anatomical Drawings) which contains detailed illustrations like those of Vesalius, remained undiscovered until 1714. Eustachio was an opponent of the work of Vesalius, favouring instead the theories of Galen.