Anus
The Evolutionary Journey of the Human Anus: Unveiling Its Ancient Origins
How the Human Anus Evolved from an Ancient Sperm-Releasing Hole Scientists uncover a surprising origin story for a crucial anatomical feature. Around 550 million years ago, the human anus may have evolved from a hole originally used to release sperm, according to a groundbreaking study. Researchers led by Andreas Hejnol at the University of Bergen […]