biggus dickus

alveoli

Air sacs, which are the main sites of gas exchange in the lungs.

nares

Two openings in the nose.

pores of Kohn

Small openings in the alveolar walls.

palate

The roof of the mouth.

conchae

Uneven, scroll-like nasal bones.

larynx

Voice box.

pleural sac

Serous membrane that surrounds the lungs.

pharynx

The throat.

thyroid cartilage

Adam’s apple.

trachea

Windpipe.

surfactant

Reduces surface tension in the alveoli.

epiglottis

Flap that covers the opening of the larynx.

bronchioles

Smallest air conducting passageways of the bronchi.

sinuses

Air-filled cavities that surround the nose.

mediastinum

The area of the thoracic cavity between the lungs.

respiration

Breathing.

internal respiration

Gas exchange between the tissues and capillaries.

external respiration

Gas exchange between the alveoli and pulmonary blood.

vital capacity

The total amount of air that can be forcibly expired after maximum inspiration.

tidal volume

The amount of air inhaled in a normal breath.

turbinates

Increase(s) movement of air in the nasal cavity.

pharynx

Serve(s) as passageway for air and food.

bronchi

Provide(s) passage for air from trachea to lungs.

anterior nares

Enable(s) entry of air from the outside environment.

mucous membrane

Warm(s) and moisten(s) air entering from the outside environment.

alveoli

Serve(s) as point of exchange of oxygen and carbon dioxide with capillaries.

diaphragm

Expand(s) and relax(es) to change pressure in chest cavity.

cilia

Entrap(s) particles from inhaled air.

pleural fluid

Prevent(s) friction between membranes covering the lungs.

larynx

Contain(s) the vocal cords.