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Air enters the body through the nostrils or the mouth, passing down the throat to the larynx, and then to the trachea. The trachea divides into two branches in the chest cavity, the right and left bronchi that enter the lungs. The branches of the bronchi narrow down to tubes called bronchioles of less than 1 mm diameter, and these sub-divide into even narrower tubes called alveolar ducts. Each alveolar duct ends in a grapelike cluster of thin-walled sacs, called alveoli. From 300 million to 400 million alveoli are contained in each lung.
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Describe the structure of a terminal bronchiole and its alveolar sac?
terminal brobchiole is formed as a result of division of respiratory bronchiole. It is extremely thin and end up into alveolar sac ALVEOLAR SAC THESE ARE SMALL SACS WITH 8 TO 10 SACCULES CALLES ALVEOLI. IT HAS CENTRAL AIR PASSAGE. THESE ALVEOLI SERVE AS RESPIRATORY MEMBRANE AND HELP IN EXCHANGE OF GASES
What is the function of the branchi?
the function of the bronchi is to help filter out the particles breathed in. the air enters the bronchiole and oxygen passes through he alveoli wall while the co2 and other waste passes out the body
What is the order of passageways from proximal to distal?
terminal bronchiole, respiratory bronchiole, alveolar duct
Where in the lung does exchange of O2 and CO2 take place?
It takes place between the alveoli and the blood capillaries
Where in the human body is o2 and co2 exchanged?
Human gas-exchange occurs in the lungs. Once air enters the lungs, diffusion of O2 and CO2 occurs in the alveoli.
What is at tip of each bronchiole?
Alveoli.
Which structure branches further into alveoli?
the bronchiole
The innermost chamber of respiratory system into which air can be drawn is ..........?
innermost chamber of respiratory system into which air can be drawn is . Bronchiole
Are your left and right lungs exactly the same?
Bronchiole tubes, bronchioles, and alveoli.
Where does the oxygens exchange take place?
It happens in the Alveoli. The Alveoli is a balloonlike air sacs that is found at the end of each end of bronchiole.
What are the small chambers of the lungs that are involved in the exchange of gases?
The alveoli are small sacs within the lungs where gas exchange occurs. They are located at the ends of bronchiole branches.
What are the names of the tiny air sacs at the end of the bronchioles?
identify the part of the resperatory system which cluster of tiny thin walled sacs found at the end of leach bronchi
When the bronchiole constricts which will happen to resistance?
decrease in oxygen provided to the alveoli
What is the main difference between a bronchus and a bronchiole?
A bronchiole has no cartilage in its wall, a bronchus does.
What is a bronchi Ole?
Bronchiole tube is a narrow tube formed by repeated branching of the bronchi, which conducts air into the alveoli.
Branches of the windpide that lead into the lungs are the?
trachea- primary bronchi- secondary bronchi- tertiary bronchi- bronchiole- alveoli
What is a bronchi ole tube?
Bronchiole tube is a narrow tube formed by repeated branching of the bronchi, which conducts air into the alveoli.
