Levels of Organization
Digestive System
Excretory System
Respiratory System
Circulatory System
100

Which level of organization represents the smallest unit of any living thing?

Cell

100

This is the organ that chemically and mechanically break food down and create chyme.

What is the stomach?

100

This organ is responsible for moving urine from the kidney to the bladder.

What is the ureter?

100

Organs responsible for the exchange of gasses.

What are the lungs?

100

This is the blood pumping muscle, also known as the seat of emotion in western society.

What is the heart?

200

Which level of organization is made up of more than one tissue?

Organ

200

These are responsible for the absorption of the food that has been broken down by the stomach.

What are the intestines?

200

This system works with the excretory system to expel CO2 gas.

What is the respiratory system?
200

The tube just past the larynx that sends air to the lungs.

What is the trachea?
200

This system works with the circulatory system to bring oxygen to all the cells in the body.

What is the respiratory system?

300

Which level of organization is made up of more than one organ system?

Organism

300

This organ produces bile which is then stored in the gall bladder.

What is the liver?

300

The organ responsible for removing waste from the blood that produces urine.

What is the kidney?

300

The tubes that branch off from the trachea.

What are the bronchi?

300

These carry blood away from the heart and out to the cells.

What are the arteries?

400

Daily Double

Which level of organization is made up of more than one cell?

Tissue

400

This System works with the digestive system to excrete waste out of the body.

What is the excretory system?

400

This organ stores urine until enough has been collected to pass out of the body.

What is the bladder?

400

This system works with the respiratory system to bring oxygen to all the cells in the body.

What is the circulatory system?

400

These carry blood back to the heart after traveling through the capillaries.

What are the veins?

500

Which level of organization is made up of more than one organ?

Organ System

500

The primary purpose of the digestive system includes two parts.

What are breaking down food and absorbing nutrients?

500

The primary purpose of the excretory system is to...

What is remove waste and pass it from the body?

500

The primary purpose of the respiratory system is to...

What is take in oxygen and expel carbon dioxide?

500

The primary purpose of the circulatory system is to...

What is carry oxygen and nutrients to the entire body through the blood?
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