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What happens at the very end of the bronchioles when the air reaches the alveoli?
Wiki User
∙ 12y ago
it is tranfered through the alveoli to the red blood cells which Carrie it throughout the human body . when it gets back they remove the CO2 and send it back through the bronchials to be exhaled
Wiki User
∙ 12y ago
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A very tiny tube that dead ends in a sac within the lungs?
Bronchioles. Air enters through the mouth, down the trachea and into the left and right main bronchi (which lead to the left and right lungs respectively) The bronchi then branch off continually into smaller and smaller bronchi. The very smallest of these are called bronchioles and they end in tiny air sacs called alveoli.
What are the small balloons in the lungs?
These are called alveoli.The bronchi (or air passages) continually divide into smaller and smaller bronchi in the lungs, until they become bronchioles. The very smallest of the bronchioles end in a tiny sac or 'balloon' called alveoli.The alveoli are surrounded by a dense network of capillaries which allows the exchange of gases between the lungs and the bloodstream.alveoli
How are the bronchial tubes and the trachea similar?
The trachea contains cartilage rings and mucous glands. The bronchioles contain no cartilage and no mucous glands. Bronchioles contain Clara cells (that the trachea does not). Respiratory bronchioles contain alveoli, which are very thin-walled blind ending sacs where gas exchange occurs - these are not present in the trachea.
Is it important that capillaries cover the alveoli?
It is very important that they cover you alveoli
What happens when sound reaches your ears?
you can hear A very complicated process of turning waves into sound occurs in your ears
What allows oxygen in and waste out?
As oxygen enters the body it will travel down the trachea (throat), through the bronchioles (tubes leading to the lungs), and into the lungs. In the lungs there are very tiny grape-like-sacs called alveoli. The membrane on these sacks is very thin, and they are surrounded by many tiny capillaries (blood vessels) whose membrane is also very thin. It is here where oxygen from the alveoli enters the capillaries, and carbon dioxide (waste product) from the capillaries enters the alveoli. The oxygen is now carried through the blood to the heart where it is pumped throughout the body, and the carbon dioxide, now in the alveoli, is expelled as the person exhales. In a situation of altitude it is this process that is hindered. Because of the lower pressure of oxygen the oxygen does not enter the capillaries as easily and the body is deprived of oxygen.
What are the very small blood vessels that cover the alveoli?
The tiny blood vessels that surround the alveoli arecalled alveolar capillaries
What is the pathway of an oxygen molecule from the atmosphere to its combination with a hemoglobin molecule?
Oxygen reaches the hemoglobin in the blood cells by entering the lungs. The key area of the lungs where the transfer of oxygen and carbon dioxide is made is called the alveoli. The Alveoli has very thin cell walls which allow oxygen and carbon dioxide to pass freely in and out of the blood stream.
What is the part of alveoli in our body?
There are about 300 million alveoli in each of your lungs. These tiny air sacs provide an ideal site for the diffusion of gases into and out of the blood - also known as gaseous exchange. The alveoli have a very large surface area - in fact if all of the alveoli in your lungs were spread out flat they would cover the area of a tennis court. This large surface area is the result of all the alveoli being small spheres - it is another example of the importance of the surface area- to-volume ratio. If your lungs were simply two large balloon-like structures, the surface area wouldn't be big enough for you to get enough oxygen by diffusion to supply the needs of your cells. But each alveolus is a very tiny sphere. The smaller the radius of a sphere, the bigger the relative surface area - halving the radius increases the relative surface area by a factor of four. The millions of tiny alveoli in the human lungs are a very effective adaptation which provides a huge surface area for gaseous exchange into and out of the blood. The alveoli have a good air supply from the bronchioles and a rich blood supply. This is vital for successful gaseous exchange because it maintains a steep concentration gradient for oxygen from the air in the alveoli to the blood, and for carbon dioxide from the blood to the alveoli.
Where are alveoli located in human body?
Alveoli are very tiny air sacs found in the lungs where CO2 and O2 are changed.
Which of these have very thin cell membranes?
Which of these have very thin cell membranes?
What happens to the alveoli?
Alveoli are the tiny sacs in the lungs that are the powerhouses of the respiratory system. That is where oxygen-spent blood gives up its carbon dioxide and becomes re-charged with oxygen. Lung alveoli are the ends of the respiratory tree, branching from either alveolar sacs or alveolar ducts, which like alveoli are both sites of gas exchange with the blood as well. Alveoli are particular to mammalian lungs.
