Human body systems

Which is the correct order?

• Tissues > cells > organs > systems

• Cells > organs > tissues > systems

• Cells > tissues > organs > systems

• Tissues > organs > systems > cells

Tick all of the organs in the digestive system.

• Stomach

• Lungs

• Heart

• Liver

• Intestines

Tick all of the parts of the respiratory system.

• Trachea

• Alveoli

• Left ventricle

• Aorta

• Bronchioles

Tick all of the parts of the circulatory system.

• Vena cava

• Alveoli

• Left ventricle

• Aorta

• Bronchioles

Which component of our blood carries oxygen?

• White blood cells

• Red blood cells

• Platelets

• Plasma

Which component of our blood carries glucose and carbon dioxide?

• White blood cells

• Red blood cells

• Platelets

• Plasma

Which component of our blood helps form blood clots?

• White blood cells

• Red blood cells

• Platelets

• Plasma

Which component of our blood helps fight infection?

• White blood cells

• Red blood cells

• Platelets

• Plasma

Which blood vessel sends blood from the heart to the lungs?

• Pulmonary vein

• Aorta

• Vena cava

• Pulmonary artery

Which blood vessel sends blood from the heart to the rest of the body?

• Pulmonary vein

• Aorta

• Vena cava

• Pulmonary artery