Unit 3: Human Body Vocabulary (OL)

Flashcards covering key vocabulary and definitions related to the human body systems and functions.

Cell

The smallest living organism and the basic unit of life on earth.

Tissue

A group of cells that work together to perform a specific function.

Organ

A structure made up of different types of tissues that work together to perform a specific function.

Organ System

A group of organs that work together to perform a specific function or set of functions in the body.

Organism

A living individual that can carry out all the processes of life, which can be single-celled or multicellular.

Digestive System

Responsible for breaking down food into nutrients that can be absorbed by the body.

Nervous System

Responsible for coordinating and controlling the body's activities.

Muscular System

Responsible for movement and locomotion, includes skeletal, smooth, and cardiac muscles.

Excretory System

Responsible for removing waste products from the body.

Circulatory/Cardiovascular System

Responsible for transporting oxygen, nutrients, hormones, and waste products throughout the body.

Respiratory System

Responsible for the exchange of oxygen and carbon dioxide between the body and the environment.

Immune System

Defends the body against pathogens and includes various organs and specialized cells.

Homeostasis

The maintenance of a constant internal state in a changing environment.

Reproductive System

Responsible for the production of offspring.

Endocrine System

Responsible for producing and regulating hormones that control various bodily functions.

Integumentary System

The body's largest organ system, includes skin, hair, and nails.

Lymphatic System

Network of vessels, nodes, and organs that helps maintain fluid balance and defend against infections.

Skeletal System

Provides support, protection, and movement for the body, includes bones, cartilage, ligaments, and tendons.