Human Body Vocabulary GLE Describe how genetic information is passed from parents to offspring during reproduction

Cell The basic unit of structure and function of living things

Cell Membrane The thin covering that surrounds every cell

Circulatory System The organ system that transports oxygen, nutrients, and wastes throughout your body

Cytoplasm The jellylike material inside a cell between the cell membrane and the nucleus

Digestive System The organ system that takes nutrients from food

Excretory System The organ system that removes liquid waste from the body

Microscopic Too small to be seen without using a microscope

Muscular System The organ system that includes muscles and tendons that move bones

Nervous System The organ system that senses your surroundings and controls other organs

Nucleus The part of the cell that directs all of the cell’s activities

Organ A group of tissues that work together to perform a certain function

Organ System A group of organs that work together to do a job for the body

Protist A single celled organism with a nucleus and organelles

Respiratory System The organ system that exchanges oxygen and carbon dioxide between the body and the air

Skeletal System The organ system that protects the body and gives it structure

Tissue A group of cells that work together to perform a certain function

Web Sites How the Body Works Human Body ThinkQuest Systems of the Human Body Lesson Virtual Body