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Why does damage to alveoli result less gaseous exchanges?
Damaged air sacs have a lower amount of air surface. This reduces the amount of gas exchanged because the larger the surface the larger the amount.
How does a damaged alveoli affect the person's ability to breath?
Damaged alveoli effect breathing because they are like little air sacs which take the air into the lungs. They are the lining of the lungs and they are the things that hold the oxygen in the lungs. If they are damaged, they cannot hold any oxygen, so the lungs cannot hold as much oxygen
What Part of lung damaged or destroyed by emphysema?
Emphysema primarily damages the alveoli, which are the tiny air sacs in the lungs where gas exchange occurs. In this condition, the walls of the alveoli become weakened and lose elasticity, leading to their destruction and the formation of larger, less efficient air spaces. This damage results in reduced surface area for gas exchange, making it difficult for the affected individual to breathe and leading to symptoms like chronic shortness of breath.
Why not all tidal volume reach alveoli for gaseous exchange?
The amount of air that reaches the alveoli is 150 mls less than the tidal volume. The reason for this is that this amount remains in an area called "dead space"
Is it false that emphysema destroys the tiny air sacs in the lungs?
Alveoli are the tiny air sacs that look like hollow plump grapes in healthy people. In emphysema, many of the alveoli collapse so there is less surface area for gas exchange.
What diseases affect the alvioli?
Alveoli are the minute sacs inside the lungs that expand and contain a membrane that allows the exchange of oxygen and carbon dioxide, called respiration. One of the major diseases that affect the alveoli is emphysema. That is when the walls between the alveoli breaks down and they lose surface area and become less efficient at respiration.
What are alveoli What do they do?
Alveoli are tiny air sacs that are grouped like grapes, except they are on an upside down "tree" like structure. Air flows into the lungs. RBCs in capillaries exchange oxygen and carbon dioxide at each alveolus-- millions of molecules at once. The sole purpose of these tiny sacs is exchange of gases. If they flatten, like in COPD, the person receives less oxygen.
How does gas exchange in gills differ from gas exchange in lungs?
Gas exchange in gills occurs in water, where oxygen diffuses from the water into the blood and carbon dioxide diffuses from the blood into the water. This process relies on a countercurrent exchange system, maximizing oxygen absorption. In contrast, gas exchange in lungs occurs in air, where oxygen diffuses from the alveoli into the blood and carbon dioxide moves from the blood into the alveoli to be exhaled. Lungs utilize a tidal flow mechanism, which is less efficient than the continuous flow in gills.
What happens if stratified epithellium lines the alveoli?
If stratified epithelium lines the alveoli, it would hinder the essential gas exchange process. Stratified epithelium is thicker and less permeable than the simple squamous epithelium that normally lines the alveoli, which allows for efficient diffusion of oxygen and carbon dioxide. This change could lead to respiratory issues, as gas exchange would be impaired, resulting in reduced oxygen uptake and carbon dioxide removal. Overall, the presence of stratified epithelium would compromise lung function and gas exchange efficacy.
How does emphysema affect the removal of CO2 from the blood and delivery of oxygen to cells?
In emphysema there is actual breakdown of the alveoli; the tiny air sacs where oxygen and carbon dioxide are exchanged in the lungs. When they are broken down they are replaced with scar tissues and and a loss of surface area. Human lungs have an area about the size of a tennis court when all the alveoli are healthy. A person with emphysema may have only a fraction of that available area for the gas exchange to occur. That is why they end up needing a respirator, so more concentrated oxygen can enter their partially functioning lungs so that they can get enough oxygen into their blood stream.
What happens to your alveoli when you smoke?
Smoking affects the alveoli in the lungs because when the red blood cells absorb oxygen into the alveoli when the smoke is mixing with the clean oxygen it becomes unhealthy for your lungs and dangerous.
Why is there large surface area for the alveoli?
The function of alveuli is to provide a surface for gas exchange. Therefore, a large surface area means that there is a lot of area for the gas exchange to take place. Therefore it is to improve efficiency of gas exchange in the lungs (exchanging carbon dioxide for oxygen). The large surface area is due to the shape of the alveoli- the have many small "pockets".
