The story of human evolution in ancient past is said to be written in our modern bodies. In his book “Descent of Man,” Charles Darwin talks about vestigial structures. A vestigial structure is a body ...

Medically reviewed by Andrea L. Braden, MD The female reproductive system is the internal and external organs involved in fertility, conception, pregnancy, and childbirth in people assigned female at ...

Medically reviewed by Gagandeep Brar, MD Bone marrow is the deep, interior portion of your bone. Your bone marrow, which has ...