Respiratory System

What is the name of the air sacs, where gas exchange takes place?

• Bronchi

• Lungs

• Oxygen

• Alveoli

What is the name of the two narrower tubes branching from the trachea, that lead into the lungs?

• Nose

• Bronchi

• Lungs

• Alveoli

What is the name of the large muscle that contracts and relaxes to move air in and out of the lungs?

• Bicep

• Alveoli

• Diaphragm

• Trachea

What is the name of the air tube, that is also known as the windpipe?

• Diaphragm

• Trachea

• Nose

• Alveoli

What is the name of the small tubes leading to the alveoli?

• Bronchioles

• Trachea

• Alveoli

• Cilia

What sort of blood vessels are found covering the alveoli?

• Veins

• Arteries

• Capillaries

• Diaphragm

What is the name of the bones that provide protection to the lungs?

• Ribs

• Diaphragm

• Alveoli

• Lungs

What gas diffuses from the air, into the blood?

• Nitrogen

• Carbon Dioxide

• Oxygen

• Hydrogen

What gas diffuses out of the blood, after respiration?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Hydrogen

What happens to the diaphragm when you breathe in?

• It contracts and moves up

• It contracts and moves down

• It relaxes and moves up

• It relaxes and moves down