Organization
Organs
Body Systems
Bones
Misc.
100

The lowest (smallest level of organization

Cells

100

This organ pumps blood throughout the body

heart

100

System responsible for breaking down and absorbing nutrients

Digestive

100

These cells are made in the center of your bones

Blood cells

100

These blood cells fight off infection

White Blood Cells

200

The second smallest level of organization - when two or more types of cell work together.

Tissue

200

These organs are responsible for absorbing oxygen and expelling carbon dioxide

Lungs

200

The system responsible for moving blood throughout the body.

Circulatory System

200

Name one bone from your leg

Femur, Fibia, Tibia

200

These connect muscle to bone

Ligament

300

When multiple types of tissue work together

Organ

300

This organ is the only organ that can regenerate itself

Liver

300

System responsible for sending messages throughout the body

Nervous System

300

Name one bone from your arms

Humerus, Radial, Ulna.

300

These connect muscle to muscle

tendons

400

Multiple organs work together to form this

Organ System

400

This organ stores bile to assist with digestion

Gallbladder

400

System that allows the body to move

Muscular System

400

The skeletal system is comprised of how many bones? (in an average adult)

206

400

This system contains hair, skin, and nails

Integumentary

500

The largest unit or organization

Organism

500

This organ stores bacteria but other than that, it doesn't do anything.

Appendix

500

This system gives support and structure for the body

Skeletal System

500

Individual bones on the spine that protect the spinal cord are called...

Vertebrae

500

How many nerves does the human body have? (withing 5 billion)

86 billion (on average)

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