human anatomy

Provides detailed information on the human body's structure, function, and disorders.

Examines the human body from head to toe, exploring nerves, muscles, blood and bones.

Provides a guide to the skeleton, organs and senses. Explains the processes of the human body in detail.

An introduction to the parts of the brain and how they function. Thoughts and feelings, movements, and brain injuries are discussed.

Describes human muscles, including skeletal muscles and involuntary muscles, and how they work.

Body systems are collections of organs and other tissues that fulfill a particular function in the body. Many of the systems overlap or work together. The nervous system works with every other body system in some way. Discover more in Body Systems.

Did you know that the respiratory system helps you breathe? This system is often attacked by viruses, leading to infections such as colds, the flu, and COVID-19.

Did you know that the stomach is an organ? It is part of the digestive system, which helps break down food.

Did you know that the heart is the main organ in the circulatory system? It pumps blood through the body.

Did you know that the nervous system controls all the other body systems? Nerves carry messages between the brain and the rest of the body.