Oxygenation Flashcards
Ventilation
movement of air into and out of the lungs
diffusion
movement of gases between air spaces in the lungs and bloodstream
perfusion
movement of blood into and out of capillary beds of the lungs and into other tissues and organs
how many lobes does the right lung have
3
how many lobes for the left long have
2
what is the diaphragm?
What is it involved in?
- Dome-shaped muscle separates the thoracic and abdominal cavities
- ventilation
mediastinum
Space between the lungs, containing the heart, great vessels, and esophagus
what is involved in the conducting airways
upper airway
larynx
lower airway
what is in the lower airway
trachea
bronchi
terminal bronchioles
what is in the upper airway
nasopharynx
oropharynx
What does the upper airway do
warms and humidifies air
what is the larynx
connects the upper and lower airways
what do goblet cells do
produce mucus
what are cilia
hairlike structures
what do goblet cells and cilia do
help propel foreign material upward to enable it to be coughed up
what are alveoli
primary gas exchange units
what are type I alveolar cells
alveolar structure
what do type II alveolar cells produce
surfactant which prevents lung collapse
what do alveolar macrophages do
Ingest foreign material, and remove it through the lymphatic system.
What are the function of pulmonary circulation functions
Facilitates gas exchange.
Delivers nutrients to lung tissues.
Acts as a blood reservoir for the left ventricle.
Serves as a filtering system that removes clots, air, + other debris from the circulation
Which has lower pressure: pulmonary circulation or systemic circulation
pulmonary circulation
What pressure does pulmonary circulation has
18 mm HG
What pressure does systemic circulation
90 mm Hg
what surrounds the the acinus
pulmonary capillaries
