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dem82 [27]
3 years ago
7

What function do the alveolar sacs serve in the respiratory system?

Biology
1 answer:
Brrunno [24]3 years ago
8 0

These alveoli are the smallest types of lung tissue, and one of the most important. In addition to being the primary means by which oxygen enters and carbon dioxide escapes the bloodstream, these small pouches of air are also the reason why the lungs do not totally collapse when a person breathes out. This is because they contain a cell that secretes a special chemical to lower the surface temperature to prevent lung collapse. The alveoli also contain other cells that secrete chemicals to attack and remove any foreign objects in the lungs, such as dust, dirt and other debris.

In addition to making up alveolar sacs, alveoli also form alveolar ducts. It is estimated that there are more than 300 million alveoli in the human lungs, all of which are located in either alveolar ducts or sacs that are found at the end of the smaller passageways, or bronchioles, in the lungs.


SHORT ANSWER:

Alveolar sacs contain tiny pouches called alveoli, whose primary function is gas diffusion. These clusters of alveoli have thin walls that allow oxygen to pass easily from the lungs into the bloodstream and carbon dioxide to flow from the blood to the lungs so it can exit the body.

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Through mitosis is the way the body duplicates.
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<h3>Which are the key factors in lake snow affect?</h3>

Wind direction is a key component in determining which areas will receive lake effect snow. Heavy snow may be falling in one location, while the sun may be shining just a mile or two away in either direction.

The physical geography of the land and water is also important.

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5 0
2 years ago
How many years ago were the first communities and governments formed
Diano4ka-milaya [45]

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Agricultural revolution, start of Neolithic era, maybe 12000 yrs ago

Explanation:

8 0
3 years ago
When the sun impacts weather, an interaction with the __________ takes place.
Nadya [2.5K]

Answer:

Hydrosphere

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When the sun impacts weather, an interaction with the hydrosphere takes place. The hydrosphere is the part of the earth that is enveloped by water. Water exists in three different forms on the earth based on diverse factors.

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7 0
3 years ago
Geckos and some other animals can climb smooth surfaces. Which of these explanations of this observation do you think is most re
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The gecko's feet contain molecules that are attracted to the molecules on the surface.

Geckos are lizards which belongs to reptile group. They are found in warm climatic regions of the world. Geckos and some other animals can climb smooth surfaces because of presence of Van der waal forces of attraction between the molecules of gecko's feet with molecules of the surface. The force of attraction is generated due to fluctuations or differences in charge present in molecules of feet and that of surface. The charge fluctuations generally comes into sync and generate attractive force.

<h3>What are the features of Geckos ?</h3>

Most geckos are small, soft-skinned reptiles that are often nocturnal in behaviour. A small, robust body, a big head, and often well-developed limbs are other features they have. Each limb's tips are frequently fitted with digits that have adhesive pads.

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8 0
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