RESPIRATORY System Flashcards
(29 cards)
What measures FEV1 and FEV6
Forced exploratory Volume 1 seconds and 6 seconds?
Lung monitor
Vitalograph
What is partial pressure of oxygen in the atmosphere?
160mmhg
What is the partial pressure of carbon dioxide in the atmosphere?
0.3mmhg
What is the partial pressure of carbon dioxide that we breathe out during exspiration?
27 mmhg
What is the partial pressure of oxygen that we breathe out during expiration?
120mmhg
What blood vessel carries deoxygenated blood to the alveoli?
Pulmonary Artery
What Blood vessel carries RE- oxygenated bloods from the alveoli?
Pulmonary vein
What is the partial pressure of oxygen in re-oxygenated blood into the heart?
100mmhg
What is the partial pressure of carbon dioxide in re-oxygenated blood into the heart?
40mmhg
What is the partial pressure of oxygen in tissues?
40mmhg
What is he partial pressure of carbon dioxide on tissues?
45mmhg
What is pulmonary ventilation?
Movement of air into and out of the lungs.
EXTERNAL RESPIRATION
VE
What is Pulmonary diffusion?
Exchange of oxygen and carbon dioxide between the lungs and the blood
EXTERNAL RESPIRATION
What is capillary diffusion ?
Exchange of O2 and CO2 between the capillary blood and metabolically active tissues
INTERNAL RESPIRATION
What is Hypoxemia?
Low oxygen in the blood.
How is Pulmonary Ventilation assessed?
By measuring volume of air exhaled per minute. Abbreviated- VE (minute ventilation)
L.min-1
What is the rate of breath per minute?
Respiratory frequency ( RF)
Breaths.min-1
What is the DEPTH of each breath ?
Tidal volume (TV)
L.breath-1
How do we measure pulmonary ventilation??
VE = RF X TV
VE ( pulmonary ventilation) = Respiratory frequency x Tidal Volume
What is dead space?
Volume not involved in gas exchange
0.15 L
How do we work out volume of gas being delivered to Alveoli? VA ?
VA = (TV- dead space ) x RF
Wat is the role of pleural membranes?
Stop lungs from collapsing.
Lubricates and reduces friction as lungs inflate.
Left and right pleural cavities are separate, if one punctured, only lung on that side will collapse.
What is respiration??
Any of all processes used to generate metabolic energy , mainly in form of ATP , from breakdown of food
What is peripheral circulation ?
Blood flow that reaches upper and lower extremities of the body and the surface of skin.
Border area of body
(Hands, feet)