Respiration Flashcards
What is lung volume
The amount of air you can breathe into your lungs in single breath
What is a spirometer
A machine you blow into to measure your lung volume
What does a spirometer show
Spirogram
Nametwo things that may affect your lung volume
Some diseases and a smaller body size
Name three adaptations of lungs that make them suited to gas exchange
Good blood supply
Large surface area because of alveoli
Moist linings
What increases during exercise.
Breathing rate and depth
What does regular exercise do
Strengthen your diaphragm and intercostal muscles which helps you get more air into your lungs
What does regular exercise increase
The number and size of small blood vessels in the lungs
What does regular exercise increase the number of
Alveoli
What happens to a person if they have asthma
They are sensitive to certain things like dust that can trigger an asthma attack
What does breathing dust in do to a person with asthma
Trigger an asthma attack
What are symptoms of an asthma attack
Wheezing and difficulty breathing
What does tar in cigarettes damage
Cilia
What is cilia
Tiny hairs that line airways
What happens when cilia are damaged
They can’t push away mucus so it builds up
What does a build of mucus cause
Coughing
What diseases can damaged cilia lead to
Lung disease which makes it difficult to breath
What is bronchitis
A disease that inflames the lining of bronchi
What an model breathing
A bell jar model
What can tar lead to
Lung cancer
Describe breathing in
- Air is drawn into lungs
2.volume of chest cavity increases so pressure derceases
3.diagphram contracts (move down) - Intercostal muscles (ribs move up and down)
Describe breathing out
- Air out
2.volume decreases pressure increases
3.diaphragm and intercostal muscles relax
What is the first two steps to using a bell jar model
The rubber sheet is pulled down (like a diaphragm )
The volume increases and the pressure decreases like in a chest cavity
