Respiratory system

Gas exchange occurs in the

• nose

• pharynx

• larynx

• trachea

• alveoli

The respiratory conducting passageways perform all of the following functions EXCEPT

• allow air to reach the lungs

• purify air

• humidify air

• exchange gases

• warm incoming air

What is the role of the mucus in the nasal cavity?

• increase in the air turbulence in the nasal cavity

• separate the oral from the nasal cavity

• lighten the skull

• act as a resonance chamber for speech

• trap incoming bacteria and other foreign debris

The nasal cavity is separated from the oral cavity by

• the hard palate

• the nasal conchae

• the soft palate

• both the hard and soft palate

• both the nasal conchae and hard palate

Air from the nasal cavity enters the superior portion of the pharynx called the:

• nasopharynx

• oropharynx

• palatopharynx

• laryngopharynx

Contaminated mucus is removed from the lower respiratory passageways, such as the trachea, by

• flagella

• yawning

• contractions of smooth muscles

• cilia

• laughing

Following the removal of the larynx, a person would be unable to

• speak

• sneeze

• eat

• hear

• breathe

The flap of elastic cartilage that protects food from entering the larynx when swallowing is the?

• glottis

• thyroid cartilage

• Adam's apple

• epiglottis

• trachea

Terminal bronchioles eventually terminate in

• alveoli

• bronchioles

• main bronchi

• diaphragm

Which of the following is not true of the lungs?

• the narrower portion of each lung is called the apex

• the bases rest on the diaphragm

• the left lung has two lobes

• the right lung has 3 lobes

• both lungs have two lobes