Class 8: Respiratatory System Flashcards
(100 cards)
Upper respiratory tract consists of
nose through larynx
lower respiratory tract consists of
trachea through lungs
Three parts of the pharynx
naso, oro, laryngo
nasopharynx passes only…
air
oropharynx and laryngopharynx pass…
air, food, and drink
components of larynx (voice box)
epiglottis, thyroid cartilage, cricoid cartilage
epiglottis function
flap of tissue that closes airway and directs food to the eophagus behind it
Thyroid cartilage defining features
largest, laryngeal prominence, shield shaped
cricoid cartilage function
connect larynx to trachea. it’s ringlike
Trachea dimensions
12 cm long, 2.5 cm diameter
trachea is supported by 16-20 rings of
hyaline cartilage, c-shaped
function of rings
reinforce trachea and keep it from collapsing
lungs have # of lobes on right/left?
3/2
the costal surface of the lungs press against the
ribcage
the mediastinal surface of the lungs face
medially toward the eart
the hilum is
a slit through which the lung receives main bronchus, bld vessels, lymphatics, and nerves
the root of the lung consists of
bronchus, bld vessels, lymphatics, nerves
right lung is shorter because
the liver rises high on the right side
the left lung is taller and narrower because of the
heart tilting towards the left
visceral pleura is a
serous membrane that covers the lungs
parietal pleura is located
on the inner surface of the rib cage and superior surface of the diaphragm
the parietal pleura adheres to the
mediastinum
the pleural cavity is the
potential space between the pleurae
the functions of the pleura (3)
reduce friction, create a pressure gradient, compartimentalization