Learn all about the human body's many systems and some of its individual organs, both vital and vestigial. When you purchase through links on our site, we may earn an affiliate commission.

We refer to an integrated unit as an organ system. Groups of organ systems work together to make complete, functional organisms, like us! There are 11 major organ systems in the human body.

and a human heart beats more than 3 billion times in an average lifespan. But among the most impressive systems of the body is the musculoskeletal system and all its muscles, ligaments ...

The human body is one of the most advanced and mysterious systems in the natural world. While we live our lives without ...

Can your body get rid of them as easily? Do your cells respond differently to these toxins?" To understand the physiological systems that may be contributing to these changes in behavior ...

An introduction to the amazing functions of the human body's nervous system. An introduction to the amazing functions of the human body's nervous system. This extremely advanced part of our ...

What does your endocrine system do? Its glands create and release hormones that control almost all processes in your body. They coordinate your metabolism, growth, and development, and control ...

Scientists Wednesday unveiled the first catalog of the bacteria, viruses and other microorganisms that populate every nook and cranny of the human body ... microbiome is all the microbial microbes ...

In this article, we’ll explore all there is to know about the human respiratory ... Once air enters the body, it flows into the lower portion of the upper respiratory system with the pharynx ...

The researchers found that the average human adult male has approximately 1.8 trillion immune cells in his body—and taken together, they weigh approximately 1.2 kilograms. The average adult ...