Respiratory System

What is the primary function of the alveoli?

• produce mucus

• oxygen and carbon dioxide exchang

• support the trachea

• filter dust particles

What is housed in the larynx?

• windpipe

• diaphragm

• vocal cords

• pulmonary artery

What does the diaphragm do when you inhale?

• contract

• relax

What disease is characterized by the inflammation of the airways, leading to difficulty breathing?

• pneumonia

• asthma

• tuberculosis

• bronchitis

___________ is the gas that is primarily exchanged for oxygen in the lungs.

• hydrogen

• helium

• nitrogen

• carbon dioxide

Air sacs in the lungs where oxygen and carbon dioxide are exchanged

• tonsil
• trachea
• alveoli
• spleen

Which structure in the respiratory system is commonly known as the windpipe?

• trachea

• bronchi

• larynx

• pharynx

The diaphragm is a/n

• organ

• muscle

The epiglottis is a flap of tissue that closes over the trachea when you swallow.

• True

• False

In external respiration oxygen moves from the lungs into the ____________.

• cells

• bronchi

• blood

• trachea