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Which of the following is NOT a key structure in the respiratory system?

• pharynx

• larynx

• diaphragm

• esophagus

What is the name of the piece of cartilage that blocks the larynx when we swallow food?

• epiglottis

• trachea

• bronchiole

• pharynx

The left lung has _ lobes.

The right lung has _ lobes.

The bulk of gas exchange occurs in which structure?

• trachea

• larynx

• bronchiole

• alveoli

What is the name of the muscle that moves the lungs?

• diaphragm

• bronchiole

• alveoli

• biceps brachii

Air is drawn into the lungs when the diaphragm _____________.

• relaxes

• contracts

What is the common name for inspiration?

• idea

• exhale

• inhale

• contraction

What is the common name for expiration?

• dead

• exhalation

• inhalation

• date

What structure contains the vocal cords?

• pharynx

• larynx

• nasal cavity

• sinuses