Respiratory System Quiz

What is the primary function of cells in relation to the cardiovascular system?

• To produce glucose

• To exchange gases

• To store energy

• To create proteins

Where does external respiration (ER) primarily occur?

• Lungs

• Heart

• Liver

• Kidneys

What is the primary function of internal respiration (IR)?

• Exchange of gases between the blood and the cells

• Exchange of gases between the atmosphere and the blood

• Exchange of gases within the lungs

• Exchange of gases between the heart and the lungs

How many lobes does the right lung have?

• Two lobes

• Three lobes

• Four lobes

• Five lobes

What is the membrane lining the lungs called?

• Pericardium

• Pleura

• Peritoneum

• Synovium

How many alveoli are present in the lungs?

• 100 million

• 200 million

• 300 million

• 400 million

What structures bound the lungs?

• Heart and liver

• Diaphragm and rib cage

• Stomach and intestines

• Brain and skull

What is the main role of the lungs in the human body?

• Digesting food

• Circulating blood

• Exchanging gases

• Producing hormones

In which direction does carbon dioxide travel during gas exchange in the lungs?

• Into the alveoli

• Into the blood

• Into the capillaries

• Into the bronchi

Where is the concentration of oxygen higher during gas exchange in the lungs?

• In the blood

• In the alveoli

• In the capillaries

• In the bronchioles