N212 Lecture 9 Flashcards
What are the 3 steps in the process of oxygenation
ventilation, perfusion and diffusion
The exchange of respiratory gases occur between which 2 things?
environment and blood
Respiration is the exchange between oxygen and co2 during cellular metabolism, true or false
true
The process of moving gases into and out of the lungs is called
Ventilation
the ability of the cardiovascular system to pump oxygenated blood to the tissues and return deoxygenated blood to the lungs is called
perfusion
exchange of respiratory gases in the alveoli and capillaries is called
Diffusion
for ventilation, it requires coordination of the muscular and elastic properties of the lung and thorax, true or false
true
diffusion is responsible for moving the respiratory gases from one are to another by concentration gradients, true or false
true
for exchange of respiratory gases to occur what needs to be intact
the organs, nerves and muscle of respiration along with the CNS being able to regulate the cycle
the active process stimulated by chemical receptors in the aorta is called
inspiration
the passive process that depends on the elastic recoil properties of the lungs requiring little or no muscle work is called
expiration
the chemical produced in the lungs to maintain the surface tension of the alveoli and keep them from collapsing is called
surfactant
patients with advanced COPD lose elastic recoil of the lungs and thorax, results in increase of breathing, true or false
true
the collapse of the alveoli that prevents normal exchange of oxygen and co2 is called
atelectasis
ability for the lungs to expand is called
compliance
