Alveoli

What happens is that the air volume entering the alveoli also decreases. Tidal volume is the quantity of air that enters and leaves the lungs during quiet breathing.

true.

No, but the blood leaving is.

they are very similar, both have:

thin walls through which particles can pass

consist of tiny projections

occurs in huge numbers

The respiratory system

surfactant

In alveoli: molecular oxigen - go in (to blood vessels) Carbon dioxid - go out (from blood vessels) In Cells: molecular oxigen - go in (to mitochondrion) Carbon dioxid - go out (from mitochondrion & cytoplasm)

emphysema. however COPD which is a classification of lung diseases in general, including emphysema, is also an answer to your question

Macrophages in the alveoli are scavengercells that work to keep the lung free of "foreign" materials.

From the Alveoli, it transfers to red blood cells, which travels through the circulation and reaches the heart.

Alveoli are tiny sacs in the lungs that perform gas exchange. That is the main process of respiration where the body gets rid of carbon dioxide and picks up oxygen which is used in metabolism. They have supply of oxygenated and de-oxygenated blood surrounding their surface giving them a high blood supply. They also have thin walls and a moist surface. This is all required for them to work correctly.

True.

Oxygen and carbon dioxide

Alveoli are covered with capillaries. The deoxygenated blood that has come into the lung through the arteries flows through these capillaries, getting rid of carbon dioxide and accepting oxygen from the air that has been brought into the alveoli by the bronchioles. The carbon dioxide travels back out of the alveoli, through the bronchioles, into the bronchial tube system, and out the trachea each time you exhale.

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.

The large surface area and blood supply allow the largest opportunity for diffusion. Both of these factors make it easier for oxygen to move into the bloodstream and CO2 to move out.

One alveolus is a singular, tiny air sac of the lung, surrounded by a network of capillaries, and through which oxygen and carbon dioxide are exchanged. A cluster of such air sacs are alveoli (plural of alveolus).

It is brought back to the heart to be pumped through the lungs to be exhaled.

redish pink

its the blood which act as a transporter and the concentration of blood determines that oxygen will diffuse faster than carbon dioxide due to its small molecular weight but if diffusion occur in such manner then amount of carbon dioxide will be automatically more. carbon dioxide is a toxic gas and its presence in more amount can causes problems by increasing the PH of blood,but carbon dioxide has an affinity for water. The excess carbon dioxide gets dissolve in water or simply we can say in plasma of blood more than oxygen so its its excrete in lungs and passes from lungs to mouth in atmosphere following bronchioles and bronchi.

300 million to 400 million alveoli are in each lung. Each of the alveoli receives blood from the circulatory system capillaries. It replaces carbon dioxide and other blood wastes with oxygen. The circulatory system then delivers the oxygen to cells throughout the body, bringing more wastes back to the lungs.

Yes it is. Infact, the alveolus is made up of a single layer of epithelial tissue.

Exudates in the alveoli cause rales (crackles).