Main organ of the respiratory system

Small tube that connects the mouth to the larynx and esophagus.

Two tubes that connect the trachea to the left and right bronchioles

Passageway for air moving from the pharynx to the trachea. Contains "vocal cords"

Breathing is made possible by this dome shaped muscle located under the lungs

tiny sacs in the lungs where gas exchange takes place

a flap of cartilage that prevents food and liquids from entering the trachea when you swallow

Larger of the two lungs with three lobes: superior, middle, and inferior

smaller of the two lungs with only two lobes: superior and inferior

when the diaphragm contracts and flattens pulling air into the lungs

when the diaphragm relaxes back into its natural curved shape and air is pushed out of the lungs

Hair-like structures that line the trachea, nasal passages and sinus cavities to filter out particles in the air as it passes through.

Network of tiny blood vessels wrapped around the alveoli. Place where red blood cells drop off carbon dioxide and pick up oxygen.