The air sac must have thin walls so that air passes easily through it.
'trois sacs' means 'three bags' in French.
Alveoli are the small sacs within the lungs where gas exchange takes place. Oxygen from the air we breathe passes through the alveoli walls into the bloodstream, while carbon dioxide from the blood is removed and exhaled out of the body during respiration.
Inhaled air passes through the primary bronchus, and most enters the posterior air sacs as well as the lungs. During this passage, air that was in the posterior air sacs moves through the lungs air capillaries so that exchange takes place. During exhalation, the air in the posterior air sacs passes through the lung en route to the external environment. Again exchange goes on during exhalation.
Oxygen in the lungs and passes through the alveoli, small sacs which allow gas exchange, and enters the blood to be pumped throughout the body.
The respiratory system absorbs oxygen. Oxygen is inhaled through the nose and mouth, passes through the trachea, and enters the lungs where it is absorbed into the bloodstream through tiny air sacs called alveoli.
After air passes through the trachea, it enters the bronchial tubes that branch out into smaller airways called bronchioles. In the bronchioles, the air is distributed to the alveoli, small air sacs in the lungs where oxygen is absorbed into the bloodstream and carbon dioxide is released for exhalation.
Oxygen is obtained from the atmosphere by a process called Respiration, this involves inhaling air and filling small air sacs in the lung, at which point the oxgen passes into the bloodstream through a process called Diffusion.
Vestibular sacs are responsible for detecting changes in head position and movement, as well as providing information about acceleration and gravity to help maintain balance and orientation in space. They are part of the vestibular system located in the inner ear.
three yolk sacs means three babies.
larynx , trachea , bronchioles, air sacs , and then diaphragm
It doesn't. But the body is able to extract oxygen from the air and into the blood through the thin walls of the inside structyre of the lungs. It also rids itseld of carbon dioxide by dumping it back into the air through the membranes.