Respiratory Organs
Nose or nasal cavity
Pharynx
Structure of the Organ
Function of the Organ
Nose is made out of cartilage divided
by nasal septum. Includes lateral walls Allows air to enter through the
that have projections called conchae.
external nostrils (nares)
Three regions: Nasopharynx,
Oropharynx, laryngopharynx.
Muscular passage from nasal cavity
to larynx.
Larynx
Made of 8 rigid hyaline cartilage and
spoon shaped flap of elastic, also
thyroid cartilage. Epiglottis is here.
Routes air and food into proper
channels, Plays role in speech. Vocal
folds vibrate with expelled air
Trachea
Walls are reinforced with C-shaped
hyaline cartilage. Lined with ciliated
mucosa. Expel mucus loaded with
dust and other debris away from
lungs.
Connects Larynx with Bronchi.
Passageway for air helps trap dust
and debris away from lungs.
Bronchi
Formed by division of trachea,
subdivided into smaller branches.
Carry air out to and from your lungs.
Lungs
Occupy Most of Thoracic cavity, Base
rests on diaphragm, divided into lobes
by fissures.
Used to aid in inhaling Oxygen and
exhaling Carbon Dioxide.
Alveoli
Microscopic balloon shape located at
the end of the respiratory tree.
Used to exchange oxygen with blood
and lungs during exhalation and
inhalation.