Ch. 8: Respiratory system Flashcards
Oxygen and CO2 exchange are classified under what portion of the resp. system
respiratory portion
olfaction, phonation, provide defense, condition air are all classified under what portion of the resp. system?
conduction portion
what does the filtration system include?
large, medium and small particle filters
what does a large particle filter filter?
bugs
what does a medium particle filter filter
dust and pollen
what does a small particle filter filter
bacteria and virus
what transports air to the respiratory portion
conducting portion
what kind of surface epi. is found in the vestibule of the nasal cavity
keratinized stratified squamous
what type of glands are found in the vestibule of the nasal cavity
sebaceous and sweat glands
the vestibule of the nasal cavity is supported by what
hyaline cartilage
Nose hairs in the vestibule of the nasal cavity that are large particle filters are called what
vibrissae
what regiou is found between the limen nasi and the superior and middle concha
respiratory region of the nasal cavity
what are the four functions of the respiratory region of the nasal cavity
- warm air
- clean air
- humidify air
- provide defense
what is the surface epi. of the respiratory region of the nasal cavity
ciliated pseudostratified columnar epi (respiratory epi)
in the respiratory region of the nasal cavity you will find this. A medium particle filter composed of goblet and ciliated columnar cells
mucociliary apparatus
glands in the respiratory region of the nasal cavity are found where
lamina propria
in the respiratory region of the nasal cavity what functions in mucus production for mucociliary clearance and to humidify the air
seromucus glands
the seromucus glands in the respiratory region of the nasal cavity produce serous products which produce lysozyme for _______, interferons for _______, cytokines to stimulate defensive cells and to _________
antibacterial; antiviral; humidify air
what is found in the lamina propria in the respiratory region of the nasal cavity that is composed of many large venules and is typically partially filled
cavernous plexus
what are the three functions of the cavernous plexus
warm air, humidify air and provide defense
increase blood–> venules enlarge–> increase lamina propria size–>decrease lumen size (stuffy nose) are the functions of __________ which is a defense of the cavernous plexus
inflammation
increase blood–> increase oxygen–> stimulates seromucus gland–> which leads to a ________ _________ is an example of the cavernous plexus
runny nose
what structure is found in the ethmoid, sphenoid, frontal and maxilla bones and connect to the nasal cavity through sinal ostia
paranasal sinuses
what is the epithelium for paranasal sinuses
respiratory epi
thin but has seromucus glands and is quite vascular describes what part of the paranasal sinuses
lamina propria
what is the possible problem of the paranasal sinuses
small ostia
what are the three subdivisions of the pharynx
- nasopharynx (superior)
- oropharynx (middle)
- laryngopharynx (inferior)
the mucosa of the nasopharynx is composed of what type of epithelium
respiratory
the mucosa of the oropharynx is composed of what type of epi
stratified squamous
the mucosa of the laryngopharynx is composed of what type of epi
stratified squamous
the lamina propria of the pharynx is composed of what epi
losse ct
what tonsils are found in the nasopharynx
pharyngeal and tubal
what tonsils are found in the oropharynx
palatine and lingual
what tonsils are found in the laryngopharynx
none
is there a muscularis mucosa in the pharynx
no
the name for the submucosa in the pharynx is what
pharyngobasilar fascia
the muscularis externa of the pharynx is composed of what
all skeletal muscle
what is so different about the muscularis externa of the pharynx
it is mostly skeletal muscle and it has a reversed pattern; inner longitudinal layer and outer circular layer
the name for the adventitia in the pharynx is what
buccopharyngeal fascia
the surface epi of the mucosa of the trachea is composed of what
resp. epi
what cells are found in the surface epi of the mucosa of the trachea
30% goblet, 30% ciliated columnar cells, 30% basal, 3% brush cells, 3% serous cells, 3-4% DNES cells
what is a possible function of brush cells
monitors air
secretion of a product into the lumen but serous product is unknown is a function of what
serous cells in the mucosa of the trachea
the lamina propria of the trachea is composed of what
loose ct with seromucus glands that are quite vascular
does the trachea have a muscularis mucosa
no
the submucosa in the trachea contains ________ ________ _______ and blends with LP
hyaline cartilage C-ring
the muscularis externa of the trachea is called what
the individual trachealis muscle
does the trachea have serosa or adventitia
adventitia
the extrapulmonary bronchi are structurally similar to what
trachea
decreases in amount of cartilage, number or seromucus glands, number of goblet cells and height of epithelium are all structural trends in what compared to the trachea
bronchi
the bronchi, compared to the trachea, has increases in what
smooth muscle and elastic ct
what structure is < 1mm, no cartilage, no seromucus glands, complete smooth muscle layer, and has ciliated columnar epi with goblet and clara cells
bronchioles
clara cells have ______ microvilli
short
what secrete product to protect epithelium, produce enzymes which degrade toxins and regenerate bronchiolar epithelium
secretory cells in surface epi of bronchioles
what is the last part of the conducting portion of respiratory system
terminal bronchioles
what is the structure epi of terminal bronchioles
simple columnar with some cilia and claras
the lamina propria of the terminal bronchioles is made up of what
fibroelastic ct
what type of muscle is found in terminal bronchioles
1-2 layers of smooth ms
what is the first region of the respiratory portion of the respiratory system
respiratory bronchioles
what is the structure epi of respiratory bronchioles
simple cuboidal epi with claras and some cilia
what is the general function of alveolar ducts
gas exchange
the structure of alveolar ducts is the same as what
alveoli
what is the general function of alveolar sacs
gas exchange
the structure of alveolar sacs is the same as what
alveoli
what is the general function of alveoli
gas exchange
what are alveoli, alveolar sacs and alveolar ducts made up of
alveolar type I cells, alveolar type II cells, and alveolar macrophages
what is 95% of the alveolar surface and has tight junctions
alveolar type I
what is another name for alveolar type I cell
type I pneumocyte
what type of cells are alveolar type I
squamous cells with zonula occludens between cells
what is the general function of alveolar type I cells
gas exchange
what is another name for alveolar type II cells
type II pneumocyte
what is 5% of alveolar surface made up of
alveolar type II cells, but they are as numerous as type I cells
what type of cells are alveolar type II
cuboidal
what are the general functions of alveolar type II cells?
produce pulmonary surfactant, stem cell for type I and II, and produce lysozyme
whats another name for alveolar macrophages
dust cells
where do alveolar macrophages develop from?
monocytes
what is the general function of alveolar macrophages
clean septal walls using phagocytosis
what is the region between two alveoli called?
interalveolar septum
alevolar type I and II, continuous capillaries, basal lamina, and small amounts of connective tissue with lots of elastic fibers are all parts of what
interalveolar septum
what is the region where oxygen and CO2 pass between the air and the blood called
blood-gas barrier/ blood-air barrier
pulmonary surfactant, alveolar type I, fused basal lamina, and endothelial cell of capillary are parts of what
blood-air barrier
when there is chronic exposure to irritants and metaplasia in the upper respiratory tract goblet cell numbers will ________ therefore _______ in mucus
increase; increase
when there is chronic exposure to irritants and metaplasia in the upper respiratory tract ciliated columnar cell numbers will ______ therefore ______ congestion
decrease; more
when there is chronic exposure to irritants and metaplasia in the upper respiratory tract seromucus glands will _______ therefore ______ fluid
increase; more
when there is chronic exposure to irritants and metaplasia in the upper respiratory tract if much coughing then may develop patches of _________ _________ instead of respiratory epi
stratified squamous
artificial surfactants and glucocorticoids are two treatments of what
respiratory distress of the newborn= RDS= hyaline membrane disease
decrease in elastin so decrease in alveolar elasticity, reduced surface for gas exchange and is irreversible are all conditions of what
emphysema
inflammation which causes emphysema can be due to what
infection, irritants and smoking
hepatocytes produce alpha1-AT but cannot release it is a cause of emphysema. what type of cause is this
genetic condition