Exercise, Asthma and smoking
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What 3 ways affect your gas exchange system?
Exercise, Asthma, Smoking
What do your muscles need to keep you going when exercising? Why?
Oxygen and glucose so they can respire and release energy
What happens during exercise?
Your breathing rate and depth of breathing increase so you can get more oxygen into your blood
What happens when you exercise regularly?
Muscles that you use to breath (intercostal muscles and the diaphragm) will get stronger so your chest cavity can open up more when you breath in and more air gets into your lungs Regular exercise can increase the number and size of the small blood vessels in your lungs and the number of alveoli. making gas exchange more efficient
What are people with asthma too sensitive towards?
pet hair, pollen, dust, smoke
What happens when an asthmatic breathes these things in? Give symptoms for an asthma attack
The muscles around their bronchioles contract, narrowing the airways. the lining of the airways becomes inflamed, and fluid builds up in the airways, making it hard to breathe. - this is an asthma attack symptoms are: Wheezing difficulty breathing tight chest
What can asthmatics use?
an inhaler containing drugs to open up airways
What do cigarette smokes contain?
Carbon monoxide, nicotine, tar and particulates
What does tar do?
Covers the cilia (little hairs) on the lining of the airways damaged cilia can’t get rid of mucus properly mucus sticks to the airways, making you cough (smoker’s cough) Damage builds up leading to bronchitis - disease that inflames the lining of the bronchi- and emphysema (a disease that destroys air sacs in the lungs. Tar has carcinogens (substances that can cause cancer) smoking can cause any of lung, throat and mouth cancer