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Alveoli

Alveoli are the small air bags present in lungs that help in gaseous exchange.

450 Questions

What is the respiratory organ of leech?

a open type it is also a cold blooded animal it system is 5 chambered nd help it to circulation in blood.

What structural characteristics of alveoli make them an ideal site for diffusion of gases?

Three factors are ideal for high gas exchange between bloodstream and alveoli: # Large surface area- Hundreds of thousands of alveoli, each one shaped as a spherical sac, increase the surface area massively to increase the volume gases that can be taken up. # Large concentration grad.- fast-moving blood flow maintains a steep conc. gradient. # Small diffusion distance-The distance for O2 and CO2 is roughly two cells thick ie. 40 micrometres.

What happens when air reaches the alveoli?

When air reaches the alveoli, it undergoes gas exchange, where oxygen from the inhaled air diffuses into the blood in the surrounding capillaries, while carbon dioxide from the blood is transferred into the alveoli to be exhaled. The thin walls of the alveoli facilitate this exchange due to their high surface area and moisture, allowing for efficient diffusion. This process is essential for delivering oxygen to the body's tissues and removing carbon dioxide, a waste product of metabolism.

What happens at the very end of the bronchioles when the air reaches the alveoli?

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

What is the common between alveoli and an nephron?

Aveoli are part of your respitory system and are located in your lungs, and their function is to give Carbon Dioxide to your lungs (for you to exhale) and take Oxygen from your lungs (to give to the capillaries-your blood). So, the aveoli's, in a sense, filter your bloods oxygen.

Nephrons are part of the excretory system and are located in your kidneys. Their function is to filter your blood by taking out excess salts and waste. So, the nephrons also filter out your blood, but instead of filtering the gasses in your blood, the nephrons filter out the metabolic wastes.

Does oxygen passes through the walls of the alveoli from the air into the cappilaries of the whist?

Yes, Oxygen diffuses through the wall of the alveoli then through the walls of the capillaries. :)

Why alveoli are rounded?

The round shape increases the contact surface area, so more air can be exchanged.

Is alveolar ventilation the same as alveolar respiration?

If we think of the lungs as trees branching out, the alveoli are at the end. They are made of up clusters of small delicate sacs. This is where the oxygen you breathe in seeps across into the blood and the carbon dioxide (a "waste product" of all the things the body makes and does) comes out of the blood (and is then breathed out). It is the delicate structure and nearness to the blood vessels that allow this passage of oxygen in and carbon dioxide out. Pretty cool!

What holds the breathing tubes to the lungs open?

The larynx or voice box provides a passage. but the alveoli help

What are air sacs?

The bronchi continue to divide into smaller and smaller branches until they end in air sacs. The air sacs in the lungs are called alveoli.

What tissue is the walls of the alveoli composed of?

the walls of the alveoli are very thin but strong layers of elastic tissue lines with a single layer of flattened epithelium.

What are the characteristics of the alveoli that help with its function?

gas exchange is the intake of the oxygen and the let out of the carbon dioxide

Where does O2 come from in your alveoli?

The plants and algae around the world.from air normal

How alveoli adapted to their jobs?

adapted by having a big surface area so it can absorb more oxygen and it contains lots of oxygen. Also it has very thin tubes for diffusion.

What is a noninfectious chronic respiratory condition that occurs when the walls of the alveoli deteriorates and lose their elasticity is?

Probably that is called as chronic fibrosing alveolitis. Very small particles, less than four micron size travel to the alveoli. Alveoli has got no much defence mechanism, but to give in to such an unnatural attack. Never in the history, you had such an insult in the form of pollution, before.

What compose of alveoli arranged in grape-like clusters?

The alveoli (singular, alveolus) are the functional units of the lungs of mammals.