Unit 1: The Lungs Flashcards
What is exhalation?
When the diaphragm relaxes and the intercostal muscles contract, decreasing volume and increasing pressure - pushing air out
What is inhalation?
When the diaphragm contracts and the intercostal muscles relax, increasing volume and decreasing pressure - drawing air in
What does pulmonary ventilation tell us?
How much air is taken in and given out at any given time
What is tidal volume?
The volume of air normally taken in
What is ventilation rate?
The number of breaths taken in one minute
How do you calculate pulmonary ventilation?
Tidal volume x Ventilation rate
What is the residual amount of air in your lungs?
The small amount of air that always stays in our lungs to stop them collapsing.
What is asthma?
A respiratory condition where spasms in the bronchi of the lungs result in breathing difficulties
What is emphysema?
A condition where the air sacs of the lungs are damaged and enlarged - causing breathlessness
What is pulmonary fibrosis?
A condition that causes scarring of the lungs
What is pulmonary tuberculosis?
And infectious bacterial disease which grows nodules in the lungs tissue
