Learn about the anatomy of the heart and how its chambers, valves, and vessels work together to maintain effective blood circulation throughout the body to sustain life.

The male pelvic region is the area between the trunk — or main body — and the lower extremities, or legs. For information on the female pelvis, see our overview. In general, the male pelvis ...

What is the male reproductive system and how does it work? Read on to learn more about the function and anatomy of the external and internal male reproductive organs.

Following its reclassification, medical students are now being taught that the mesentery is a distinct organ. Gray’s Anatomy , the world’s most famous medical textbook, has been updated to ...