Medical Terminology 10 Flashcards
Respiratory System
purpose of the respiratory system
respossible for the exchange of O2 and CO2
regulation of pH of the blood, to maintain homeostasis
Major components of the respiratory system
Nasal Cavity
pharynx
trachea
bronchus
lungs
diaphragm
upper anatomy of respiratory system
oral cavities
nasal cavities
nasopharynx
oropharynx
larynx
trachea
paired main primary bronchi
nasal cavities
uppermost part of the system
nasopharynx
behind nasal cavities, above the soft palate
oropharynx
posterior to oral cavity
larynx
hollow tubular organ containing cartilaginous framework responsible for producing sounds
trachea
flexible air tubes extending from larynx to thorax- conduit for air
paired main primary bronchi
enter the root of right and left lung
larynx structures
hyaline and elastic cartilage, joints, membranes and ligaments, muscle and hyoid bone
mucosa in the larynx forms folds creating…
upper, vestibular, immobile cords
lower, vocal, mobile cords
what is the luminal surface of the vocal cords lined with?
stratified squamous epithelium
larynx besides vocal cords lined with?
ciliated psuedostratified columnar epithelium
mainstem bronchi
2 main branches of the trachea -right bronchus is wide and shorter than left
secondary bronchi
further dividing of mainstem bronchi “lobar brochi”
tertiary bronchi
“bronchopulmonary segments” further dividing of the lobar bronchi
how many lobes in the lungs?
left- 2 (bc of heart placement)
right-3
Bronchioles
smallest air passage inside the lung- gas exchange
begins as pseudostratified columnar epithelium and transforms to simple columnar as the duct narrows
pulmonary acini
terminal bronchiole, respiratory bronchiole, and alveoli
respiratory bronchiolar unit
smallest functional unit= single bronchiole and alveoli it supplies
alveoli
buts up against capillary networks to allow for gas exchange to blood
alveolar duct
elongated airways- ring of smooth muscle
alveolar sac
space surrounded by clusters of alveoli
interalveolar septum
site of air exchange, space between capillaries and alveoli
thin portion- air blood barrier
thick portion - fluid distribution
alveolar macrophages
remove inhaled particle matter from the air spaces and red blood cells from the septum
carbon dioxide
gas produced by the body cells during metabolism
cartilage
tough elastic connective tissue that is more rigid than ligaments, less dense than bone
cilia
minute, hairlike structures that extend from the surface of a cell
diffuse
to move or spread out a substance at random, rather than by chemical reaction or application of external forces
oxygen
gas essential for human respiration
pH
symbol that indicates the degree of acidity or alkalinity of a substance
respiration
breathing moves air in and out of lungs
external respiration
transport of respiratory gases
internal respiration
external respiration
exchange of O2 and CO2 between the alveoli and the blood in pulmonary capillaries
transport of respiratory gases
the movement of O2 to the body cells and CO2 to the lungs by means of cardio system
internal respiration
exchange of O2 and CO2 between body cells and the blood in systemic capillaries
nas/ rhin-
nose
sept-
septum
adenoid-
adenoids
pharyng-
pharynx
laryng-
larynx