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What does Cappilarisation of the Alveoli mean?
Cappilarisation is where the capillaries in the lungs and surrounding the alveoli increase in numbers, making gaseous exchange in the lungs more efficient so that the respiratory system is more efficient gnereally and during exercise, meaning the heart does not have to work at a higher level to supply nutrients and oxygen to muscles and organs.
What does alveoli system mean?
The alveoli system refers to the network of tiny air sacs located in the lungs where gas exchange occurs. These structures are crucial for oxygen absorption and carbon dioxide removal from the bloodstream. Each alveolus is surrounded by capillaries, allowing for efficient diffusion of gases. The health and integrity of the alveoli are essential for effective respiratory function.
What does the word aveoli mean?
Alveoli are tiny air sacs in the lungs where gas exchange takes place. Oxygen from the air we breathe passes into the bloodstream, while carbon dioxide from the bloodstream is released into the alveoli to be exhaled.
Where does the exchange of carbon dioxide and oxygen take place?
The exchange of carbon dioxide and oxygen takes place in the lungs, specifically in the alveoli where oxygen is taken in by the blood and carbon dioxide is released from the blood to be exhaled out of the body through the respiratory system.
What does load bearing mean?
the term load bearing means to extract one partial combulation and to exchange it for a more efficient trade.
What the word alveoli mean?
air sacs
How are alveoli adapted for their function?
The site of gaseous exchange in mammals is the epithelium of the alveoli. To enable efficient gaseous exchange the alveoli have a number of adaptations to make them fit for purpose. Since gaseous exchange in mammals is reliant on diffusion and diffusion is proportional to: Surface area x difference in concentration _______________________________________ Length of diffusion path The alveoli are adapted for gas exchange in three main ways: 1) A thin exchange surface- the alveolar epithelium and the endothelium of the capillaries which surround the alveoli are only one cell thick each which means there is a very short diffusion pathway which allows for a fast rate of diffusion. The diffusion pathway is shortened further as the distance between the alveolar air and red blood cells is reduced as the red blood cells are flattened against the capillary walls. The alveolar epithelium is also partially permeable which allows specific substances to diffused through easily. 2) The alveoli are covered in a series of blood vessels and capillaries which mean that the gasses can diffuse directly into the bloodstream. The action of the heart constantly circulated the blood through the capillaries surrounding the alveoli in the lungs and this blood Flow through the capillaries maintains a steep concentration gradient. Once oxygen has diffused into the blood, it is removed from the site of diffusion by the constant blood flow and replaced with de-oxygenated blood flowing through. Red Blood cells are also slowed as they flow through the capillaries, this allows more time for the gases to diffuse across the alveolar epithelium and the endothelium of the capillaries. 3) There are about 300 million alveoli is each human lung, their total surface area is about 70m�² (about half the size of a tennis court) a large surface area, means that the gas exchange is more efficient as there is more opportunity for diffusion to take place. and increase the space in lungs
How many alveoli are in the lungs?
300 million in each and 600 million in both
What does Alveolar Ventalation Rate mean?
Alveolar ventilation rate refers to the volume of air per minute that reaches the alveoli in the lungs for gas exchange. It is calculated by multiplying the tidal volume by the respiratory rate and subtracting the dead space volume. This measurement is important for assessing the efficiency of gas exchange in the lungs.
What does it mean by microsoft exchange?
Microsoft exchange is a cover all program which basically includes all the functions needed for running business and maintaining contacts online, the features are: electronic mail, calendaring, contacts and tasks
What was the purpose of the securities exchange commission?
Do you mean the past or present purpose of the SEC? From the SEC's web site (sec.gov): 'The mission of the U.S. Securities and Exchange Commission is to protect investors, maintain fair, orderly, and efficient markets, and facilitate capital formation"
What does it mean when a company floats on the stock exchange?
what does floating on the stock exchange mean
