Hormones coordinate different body functions by carrying messages through the bloodstream to target cells and tissues. Hormonal imbalances occur through inadequate or excess hormone synthesis, which ...

The human body is a wonderous thing, especially when you consider how intricate and efficient each bodily system is. For instance, an adult’s blood vessels could encircle the earth 2.5 times if ...

Human evolution is often told as a tidy story of adaptation, yet some of our most familiar body parts still defy ...

The endocannabinoid system is found throughout the brain and body and plays a key role in everything from memory and learning ...

Your cardiovascular system consists of your heart, blood vessels, and blood. Together, they are a liquid transport network. This system delivers oxygen and nutrients to your body and picks up waste ...

The body is, for all intents and purposes, an extraordinarily complex machine. This requires a multitude of parts all working together in complicated relationships from the micro- to macromolecular ...

You have 3 different types of muscle: skeletal, smooth, and cardiac. Skeletal muscle alone accounts for over 650 different muscles. Have you ever wondered how many muscles you have in your body? The ...

Most of the human body is water, with an average of roughly 60%. The amount of water in the body can change slightly with different factors, such as age, sex, and hydration levels. Most of the human ...