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What features of the alveoli mean that gas exchange is more efficient?
Wiki User
∙ 13y ago
They Have A large surface area and they are full of red blood cells
Wiki User
∙ 13y ago
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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.
Where does the exchange of carbon dioxide and oxygen take place?
In thin walled, vascularized bag-like structures called alveoli inside the lungs. In simpler words, alveoli are balloon like structures which have many capillaries (A type of blood vessel) and is the site of actual diffusion of the O2 and CO2.
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 many alveoli are in the lungs?
300 million in each and 600 million in both
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"
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
What does it mean when a company floats on the stock exchange?
what does floating on the stock exchange mean
What does standardized exchange value mean?
to exchange something
What do you mean by foreign exchange?
Foreign Exchange is Exchange between two currency.
What does being efficient mean?
To be efficient means to be quick and effective at a job or task.
