answer the question corectly.
1.what is the role of the diaphragm in the inhalation and exhalation of the air?
2.why alvioli are said to be the site of gas exchange?
3.trace the cycle of the flow of blood.start from the lungs and back to the lungs?
4.why the blood becomes oxygenate and deoxygenated?
5.where would the blood be circulated in the systemic circulation?
6.why smoking is hard to be stopped?
7.why covid-19 is categorized as a respiratory illness?
8.why exercise is benificial to us?
9.why most of the circulatory and resperatory diseases are caused by unhealthy lifestyle?
10.why"prevention is better than cure" is a very importance message to us?
1.what is the role of the diaphragm in the inhalation and exhalation of the air?
2.why alvioli are said to be the site of gas exchange?
3.trace the cycle of the flow of blood.start from the lungs and back to the lungs?
4.why the blood becomes oxygenate and deoxygenated?
5.where would the blood be circulated in the systemic circulation?
6.why smoking is hard to be stopped?
7.why covid-19 is categorized as a respiratory illness?
8.why exercise is benificial to us?
9.why most of the circulatory and resperatory diseases are caused by unhealthy lifestyle?
10.why"prevention is better than cure" is a very importance message to us?
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Answer:
1. Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges. This contraction creates a vacuum, which pulls air into the lungs. Upon exhalation, the diaphragm relaxes and returns to its domelike shape, and air is forced out of the lungs
2. The walls of the alveoli share a membrane with the capillaries. That's how close they are. This lets oxygen and carbon dioxide diffuse, or move freely, between the respiratory system and the bloodstream. Oxygen molecules attach to red blood cells, which travel back to the heart.
3.
4. The pulmonary artery carries deoxygenated blood to the lungs. The blood becomes oxygenated in the lungs. Oxygenated blood leaves the lung via the pulmonary vein. Blood moves into the left ventricle.
5. Systemic Circuit
Systemic circulation carries oxygenated blood from the left ventricle, through the arteries, to the capillaries in the tissues of the body. From the tissue capillaries, the deoxygenated blood returns through a system of veins to the right atrium of the heart.
6. Your brain has to get used to not having nicotine around. Nicotine is the main addictive drug in tobacco that makes quitting so hard. Cigarettes are designed to rapidly deliver nicotine to your brain. Inside your brain, nicotine triggers the release of chemicals that make you feel good.
7. COVID-19 is mainly spread from person to person through respiratory droplets that are produced when an infected person coughs, sneezes, sings, exercises, or talks. The virus spreads through both large respiratory droplets that can travel short distances and through small respiratory particle aerosols that can linger in the air for several hours and travel longer distances (>6 feet) before being inhaled
8. Exercise strengthens your heart and improves your circulation. The increased blood flow raises the oxygen levels in your body. This helps lower your risk of heart diseases such as high cholesterol, coronary artery disease, and heart attack. Regular exercise can also lower your blood pressure and triglyceride levels.
9. The risk factors of circulatory system diseases are: stress, overuse of alcohol, smoking cigarettes, bad eating habits, sitting life style. Calorie overconsumption, animal fat rich diet, sitting life style result in the development of android obesity, hypercholesterolemia, that enhance atheromatosis.
10. it is sensible to stop a bad thing or an illness from happening in the first place than to have to deal with awful problems, worse health issues or damages later.
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I don't know the answer on number 3 but I still hope that it helps good luck