Show:
Tiny Things
Tissue
Levels of Organization
Organ Systems
More Organ Systems
100
This is the smallest unit of structure in your body.
What is a cell?
100
This kind of tissue helps the body move.
What is muscle tissue?
100
This is made of different kinds of tissue.
What is an organ?
100
This system protects the body, keeps water inside and regulations body temperature.
What is skin?
100
This system takes food into the body, breaks food down and absorbs the materials.
What is the digestive system?
200
This is the jellylike substance inside of a cell.
What is cytoplasm?
200
This kind of tissue supports the body and connects its parts.
What is connective tissue?
200
This is a group of organs working together.
What is an organ system?
200

This system is made of muscles that expand and contract, attached to bones, to allow for movement. 

What is the muscular system?

200
This system supports the body, protects the body and allows movement.
What is the skeleton system?
300
This forms the outside boundary of a cell.
What is the cell membrane?
300
This type of tissue covers the body parts and protects the body.
What is epithelial tissue?
300
The human body contains over 100 trillion of these.
What is a cell?
300
This system removes waste.
What is the excretory system?
300
This system detects and interprets information from the environment. It also controls body functions.
What is the nervous system?
400
This is like the "brain" of the cell.
What is the nucleus?
400
This type of tissue carries messages back and forth to the brain.
What is nerve tissue?
400
This is a group of similar cells that perform the same function.
What is tissue?
400
This system carries needed materials to the body cells, carries waste away from the cells and helps fight disease.
What is the circulatory system?
400
This system enables the body to move and moves food through the body.
What is the digestive system?
500

The name for the 'electrochemical signal' your brain sends around your body

Neuron

500
This type of tissue is cartilage, like in your ear.
What is connective tissue?
500
Put the levels of organization in order from smallest to largest.
What is cell, tissue, organ and organ system?
500
This system takes oxygen into the body and eliminates carbon dioxide.
What is the respiratory system?
500
This system fights disease.
What is the immune system?