Digestive, Circulatory, Respiratory and Excretory Systems

The fluid part of blood that contains the red blood cells, white blood cells and platelets.

• Red Blood Cells

• White Blood Cells

• Water

• Plasma

Air sacs in the lungs, surrounded by capillaries where the exchange of oxygen and carbon dioxide takes place.

• Bronchi

• Bronchioles

• Trachea

• Alveoli

The gas brought into the lungs for the body's use.

• Carbon Dioxide

• Carbon Monoxide

• Hydrogen

• Oxygen

A collection of organs that break down food so that it can be used by the body

• Digestive Tract

• Skeletal System

• Muscular System

• Digestive System

Large molecules are broken down into nutrients by enzymes

• Mechanical Digestion

• Chemical Digestion

• Digestive System

• Digestive tract

These blood cells destroy pathogens and help clean wounds.

• Red Blood Cells

• White Blood Cells

• Platelets

• Plasma

Blood vessels that carry blood from the body back to the heart.

• Arteries

• Veins

• Capillaries

The pump that drives the circulatory system

• Lungs

• Heart

• Brain

• Liver

Help with blood clotting

• Red Blood Cells

• White Blood Cells

• Platelets

• Plasma

Inhaling oxygen and exhaling carbon dioxide

• Breathing

• Respiration

• Lungs

• Diaphragm