The Respiratory System Flashcards
In what proportions is CO2 dissolved into different parts of the blood
Plasma = 10%
Haemoglobin = 30%
Bicarbonate form = 60%
How much can blood pH vary by before causing an issue
0.05
What is acidosis
Caused by a reduction in respiratory stimuli to combat this the body excretes H+ ions and absorbs HCO3- ions
What is tidal volume when at rest
6L/min
What is a side effect of increased long term ventilation
Cerebrospinal fluid becomes more alkaline which can be lethal
What is lung compliance
How stretch the lungs are
How does lung compliance change with lung pressure
At high pressure lung compliance is lower and vice versa
What can be measured on a spirometer
Tidal volume
Inspiratory residual volume
Expiratory residual volume
Vital capacity
What are the peripheral chemoreceptors in the aortic arch sensitive too
Changes in pO2
What limits over inflation of the lungs
The pneumotaxic centre
What part of the brain is responsible for actively trying to hold our breath
The cerebral cortex
