Capillaries are very tiny blood vessels — so small that a single red blood cell can barely fit through them. They help to connect your arteries and veins in addition to facilitating the exchange of ...

Discover the world of types of clocks - from classic wall clocks to modern digital designs. Learn their functions, features, and how to choose the perfect clock for every room.

Runners need to get enough protein for muscle repair and proper cell function. There are many different types of protein sources out there—some are animal-based, while others are plant-based. You need ...

Humans are complex organisms made up of trillions of cells, each with their own structure and function. Scientists have come a long way in estimating the number of cells in the average human body.

Emotions are how you respond to the world around us. They’re an important part of your daily functions and help shape you into who you are. They also contribute to the quality of your life. Emotions ...

Many types of liver disease can develop for various reasons. These can include contracting a viral infection, consuming excess alcohol, and having a health condition that impairs the immune system.