Human Body Systems Retest

The basic unit of structure and function in all living things.

Groups of cells with a common structure and function that are organized together to perform a specific life function.

Groups of tissues that work together to perform closely related functions.

A group of organs that work together to perform vital life functions.

Consists of skeletal muscles, cardiac muscles, and smooth muscles. Muscles work in pairs. Responsible for movement, heat, and posture.

Protects and supports body organs and provides a framework the muscles use to support movement.

Allows us to breathe. Intakes oxygen into the blood and carbon dioxide out of the body.

The organs and tissues involved in circulating blood and nutrients through the body.

The system that eliminates cellular waste (urine, sweat, feces, and carbon dioxide) through the kidneys, skin, digestive system, and lungs.

Body system that breaks down food and absorbs nutrients.