lung 1 Flashcards
what are the sections of the lung
trachea
bronchi
bronchioles
alveoli
what are the two zones of the lung
conducting zone and respiratory zone
what are some functions of the conduction zone
passageway for air
filters warms and moistens
mucociliary escalator
what type of muscle is in the larger cz walls
smooth muscle, controlled by nerves and biological molecules
what are some functions of the respiratory zone
gas exchange
how many generations of airway are ther
23
in which generations do the conducting zones start and end
0-16
in which generations do the respiratory zones start and end
17-23
what are some cells found in the conducting zone
cilliated cell
basal cell
goblet cell
aveolar macrophage
intermediate cell
what is a common feature of both zones
single epithelial layer
what are the layers of conducting zone cells
mucus
ciliated epithelium and goblet cells
basement membrane
smooth muscle
cartilage
what are some functions of the conducting zone EPITHELIAL cells
physical barrier
mucose clearance
metabolism of inhalants
attraction and activation of immune cells
control of smooth muscle function
what function do ciliated epithelial cells serve
physical barrier
mucus transport
what function do goblet cells serve
mucus secretion
what function do basal cells serve
progenitors for cilliated and goblet cells