Complex sentence: He also performed studies of the lymphatic system of reptiles, and in 1833 described the "foramen of Panizza", which is a hole with a valve that connects the left and right aorta in the crocodilian heart.
Split into simpler sentences: He also performed studies of the lymphatic system of reptiles. In 1833 he described the "foramen of Panizza", which is a hole with a valve that connects the left and right aorta in the crocodilian heart.