Cells, Tissue, Organ, and Organ System
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Cells
In biology, the smallest unit that can perform all life processes.
Stem cell
Unspecialized cells that are able to develop into many different type of cells.
Cell differentiation
The process where cells become different types of cells.
Tissue
A group of similar cells that perform a common function.
Organ
A collection of tissues that carry out specialized function of the body.
Organ System
A group of organs that work together to perform body functions.
Organism
A living thing
Homeostasis
Steady internal conditions when external conditions change.
Excretory System
Removes solid, liquid, and gas waste materials from the body.
Respiratory System
Exchanges gases between he body and the environment.
Circulatory System
It transports gases, nutrients, waste, and other substances throughout the body.
Lymphatic System
Removes excess fluid from around organs, produces white blood cells, and absorbs and transports fats.
Immunity
The resistance to specific pathogens or disease-causing agents.
Skeletal System
Protects internal organs, provides support, helps the body move, and stores minerals.
Muscular System
Helps the body move.
Nervous System
A group of organs nd specialized cells that detect process and respond to information.
Digestive System
A group of organs works together to convert food into energy and basic nutrients to feed the entire body.