Alveoli

Air. Alveoli are air sacs on the end of bronchioli. Gas exchange of carbon dioxide and oxygen occurs through the alveoli.

asthma

Alveoli does not collapse because lungs always have a residual volume which prevents the alveoli to collapse.

Large surface area due to the combined spherical shape (600 million alveoli = 80 m2)

Flattened epithelial cells of alveoli and close association with capillaries

Short diffusion distance from alveoli to blood (0.5-1.0 um)

Dense capillary network

Moist surface for the solution of gases

Carbon dioxide ;D and carbon dioxide leaves it. 8)

lungs

The wall is thin to allow rapid andefficient diffusion across of O2 into the blood and CO2 into the alveolar space (the air). It is moist for many reasons but primarily because diffusion in this form must be in slution.

The alveoli is the point where the waste product of respiration (carbon dioxide) and oxygen are diffused into or out of the blood. Oxygen diffuses into the blood stream and are carried to the heart and carbon dioxide is diffused out of the lungs and expired. The alveoli have moist walls and are close to the capillaries which speeds up the process.

To allow for quick and efficient gas diffusion.

300 million in each and 600 million in both

Of course, the lungs receive a full flow of blood straight from the heart, because the entire blood supply must be oxygenated and have it's carbon dioxide removed continuously. The alveolis' function is to provide a large surface area for the gas exchange to take place. These millions of tiny air sacs have a surface covered in very fine capillaries.Their combined surface area is about the same as a tennis court,co-incidently similar to the surface area in the small intestine.

In the alveoli

yes while oxygen then diffuses into the blood, and carbon dioxide diffuses out. it's a chain

If their walls are too thick, substances like oxygen and nutrients and waste cannot pass across the cells into or out of the body.

The alveoli is just one cell layer thick so that diffusion of gasses between the capillaries and the alveoli is easy. Simple squamous epithelium are found in the capillary walls and the alveolar walls. They are thin so diffusion is easy.

Oxygen is exchanged from the air in the alveoli into the blood in the capillaries, while carbon dioxide is exchanged from the blood in the capillaries into the air in the alveoli during the process of respiration.

No, we need many, many alveoli to give the surface area needed for gas exchange.

The verb to seize means to grab and hold.

Example:

"I pulled away before he could seize the phone from me."

"The enemy troops prepared to seize the city."

"Moving parts will often seize, or become stuck together, unless lubricated."

Blood does not go into the alveoli, that would only result from a hemorrhage. Blood does come close to the alveolar sacs via small capillaries that are there to perform an action called gas exchange. This process occurs as a result of diffusion and releases the carbon dioxide in the red blood cells and is replaced by oxygen to be carried to the body tissues and used in tissue respiration.

The Air Sacs or The End of the Bronchioles.

the paouch like air secs at the smallest lenchioles is called alveoli.the walls of alveoli are very thin and they are sorrounding thin blood capllaries .it is in alveoli exchange of gaseouse takes place there are so many alveoli in blood so they provides very larges surface srea for cxchanges of gaseouse

Lobule

Carbon dioxide is removed from the blood by the lungs and exhaled when you breath out.

b) An alveolus (plural: alveoli, from Latin alveolus, "little cavity") is an anatomical structure that has the form of a hollow cavity.[1] Found in the lung parenchyma, the pulmonary alveoli are the dead ends of the respiratory tree, which outcrop from either alveolar sacs oralveolar ducts, which are both sites of gas exchange with the blood as well.[2] Alveoli are particular to mammalian lungs. Different structures are involved in gas exchange in other vertebrates.[3] The alveolar membrane is the gas-exchange surface. The blood brings carbon dioxide from the rest of the body for release into the alveoli, and the oxygen in the alveoli is taken up by the blood in the alveolar blood vessels, to be transported to all the cells in the body.

It means to hold your breath most likely.