Your forearm anatomy includes 20 muscles, ranging from the extensor carpi radialis longus to the abductor pollicis longus. One of the largest is the brachioradialis, which helps to bend your elbow.

The thenar eminence refers to the bulge that can be seen at the base of the thumb. It’s made up of three separate muscles that work to control the fine motions of the thumb.

Human embryos are more muscle-bound than adult humans, new microscope images cataloging early development show. For instance, at seven weeks of gestation, embryonic hands have about 30 muscles.

For more than 60 years, the UCSF Willed Body Program has overseen the donation of bodies for medical education and research. ... Bodies Donated to Science Offer Invaluable Hands-on Lessons in Anatomy ...