Johann Friedrich Meckel the Younger was a prominent German anatomist born in 1781. He is best known for his contributions to the field of anatomy, particularly in the study of human and comparative anatomy. Meckel's work helped advance the understanding of various anatomical structures and their functions. Meckel was also associated with the Meckel's diverticulum, a congenital condition named after him, which is a remnant of the embryonic yolk sac. He served as a professor at the University of Berlin and published several influential texts that shaped the study of anatomy in the 19th century. He passed away in 1833.