Respiratory System Keywords Flashcards
Diffusion
movement of gas molecules from an area of high concentration/partial pressure to an area of low concentration / partial pressure
gaseous exhange
movement of oxygen from air to blood and CO2 from blood into air
tidal volume
volume of air breathed in/out during each breath
inspiratory reserve volume (IRV)
volume of air that can be forcibly inspired after a normal breath
expiratory reserve volume (ERV)
volume of air that can be forcibly expired after each normal breath
residual volume
amount of air that remains in lungs after maximal expiration
spirometer
device used to measure the volume of air inspired and expired by lungs
partial pressure
pressure exerted by an individual gas within a mixture of gases
concentration/diffusion gradient (often referred to as concentration gradient)
explains how gases flow from an area of high concentration to low concentration. the steeper the gradient the faster diffsion occurs.
proprioceptors
sensory receptors found in muscles and joints that provide information to the CNS about position and movement
cilia
microscopic hair-like projections that help to sweep away fluids and particles
COPD (chronic obstructive pulmonary disease)
a chronic and debilitating disease and is the name for a collection of diseases such as emphysema. main cause of emphysema is smoking. its a long-term progressive disease of the lungs that causes shortness of breath.
Ventilation
Breathing
Getting air in and out of lungs
External respiration
Gas exchange between blood and lungs
Internal respiration
Exchange of gases between blood in capillaries and body cells
