medsurg 3 Flashcards
protective mechanisms of the respiratory system
-irritant receptors
-alveolar macrophages
-nasal hairs
-mucous membranes
-cilia
what do irritant receptors do
-trigger sneeze and cough
-project out particles or bacteria
what do alveolar macrophages do
attack foreign particles and bacteria
what do nasal hairs do
trap dust and microorganisms
what do mucous membranes do
-warm and moisten air
-trap inhaled particles in the mucous
what do cilia do
move particles to be swallowed or coughed
3 parts of the pharynx
-nasopharynx
-oropharynx
-laryngopharynx
airway between the pharynx and trachea contains the vocal chords
larynx
what protects the airway of the larynx
epiglottis at the top of the larynx
vestibular folds close the glottis
walls lines with ciliated epithelium
what closes the vocal cords when we swallow and open when we talk
vestibular folds
lined with ciliated epithelium mucosa and extends to the carina
trachea
parts of the bronchial tree
-primary bronchi
-secondary bronchi
-tertiary bronchi
-bronchioles
-alveolar ducts
-alveolar sacs
what is responsible for gas exchange
alveoli
problems with alveoli = ________ gas exchange and _______ SPO2
decreased
decreased
the exchange of air occurs through whaaht is called the ____________ which consists of the alveolar epithelium the capillary endothelium and their joined basement membrane
respiratory membranes
the alveoli are wrapped in a fine _____ of capillaries
mesh
the extremely _______ walls of the alveoli and the _________ of the capillaries allow for efficient gas exchange
thin
closeness
what is the most important muscle of the respiratory system
diaphragm
how many lobes does the right lung have
3
how many lobes does the left lung have
2
what fissures does the right lung contain
horizontal
oblique
what fissure does the left lung contain
oblique
primary muscles of the respiratory system
diaphragm
intercostal