Learn all about the human body's many systems and some of its individual organs, both vital and vestigial.

Among the most impressive systems of the body is the musculoskeletal system. But how many muscles are in the human body?

The endocrine system consists of glands that make hormones. Your body uses hormones to control growth, development, metabolism, reproduction, mood, and other functions.

Each organ in your body’s 11 organ systems work so you can perform activities like breathing, digestion, and movement. Different organs can work together to perform a common function, like how ...

Microbes have evolved over millions of years to live in and on all parts of the human body. Scientists have created new ways to reconstruct how this evolution unfolded, using mathematical tools ...

There are four anatomical sling systems of the body, and we asked a strength and conditioning coach to explain each one, including how to exercise them and build a stronger body.

The human body is a complex structure that has within it several systems that function efficiently to take care of its different needs. These are the respiratory system, the circulatory system ...

For most of human history, the inner workings of the human body were a secret. Over the last few centuries, the invention of the microscope and other scientific techniques allowed scientists to ...

Although scientists hold different views on what exactly counts as an organ, the most-cited number of organs in the human body stands at 78.

The human body is a complex mosaic made up of clusters of cells with different genomes—and many of these clusters bear mutations that could contribute to cancer, according to a sweeping survey ...