Respiratory System

In which part of the lung does gas exchange occur?

• bronchus

• trachea

• bronchiole

• alveoli

What gas is added to the blood cells and which gas is taken away in the lungs?

• Oxygen is added and carbon dioxide is removed.

• Carbon dioxide is added and oxygen is removed.

• Nitrogen is added and hydrogen is removed.

• Propane is added and methane is removed.

Tags

NGSS.HS-LS1-7

Which two muscles contract and create more space in the chest cavity?

• diaphragm and intercostals

• rib muscles and esophagus muscles

• peristalsis and rib muscles

• stomach and rib muscles

Why does the pleural cavity have fluid?

• This fluid provides oxygen for the lungs.

• This fluid keeps the lungs from getting thirsty.

• This fluid provides lubrication for the lungs to expand and contract.

• This fluid keeps the lungs clean.

How does the extra space created by your diaphragm and rib muscles contracting affect the air pressure inside your chest cavity?

• The air pressure increases.

• The air pressure decreases.

• The air pressure does not change.

• The air pressure fluctuates.

How does an increase in air pressure in your chest cavity affect your lungs?

• Air rushes in to the lungs.

• Air is forced out of the lungs.

• The lungs are not affected.

• Air does not move in or out.

When the space inside your chest cavity decreases air pressure ___________.

• increases

• decreases

• stays the same

• fluctuates

What system moves air into and out of the lungs?

• respiratory

• circulatory

• digestive

• muscular

The respiratory system delivers _______ to the blood stream and transports ____________ out of the body?

• oxygen, carbon dioxide

• carbon dioxide, oxygen

• water, gases

• nutrients, wastes

Where does the gas exchange occur in the lungs?

• trachea

• alveoli

• bronchi

• bronchus