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4 ημέρες πριν · Alveoli. Alveoli are the functional units of the lungs that permit gas exchange between the air in the lungs and the blood in the capillaries of the lungs. Alveoli are found in small clusters called alveolar sacs at the end of the terminal bronchiole.
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Annotated illustration of human lungs. The lungs transport oxygen into the body through breathing. The trachea (windpipe) brings in air through tubular, tree-like branches called bronchi, which then branch into small bronchioles and finally into tiny microscopic sacs called alveoli.
30 Οκτ 2023 · The lung alveoli are the balloon-like air sacs loacted at the distal ends of the bronchial tree. There are as many as 700 million alveoli in each lungs, where they facilitate gaseous exchange of oxygen and carbon dioxide between inhaled air and the bloodstream.
The lower respiratory system, or lower respiratory tract, consists of the trachea, the bronchi and bronchioles, and the alveoli, which make up the lungs. These structures pull in air from the upper respiratory system, absorb the oxygen, and release carbon dioxide in exchange.
23 Μαρ 2018 · Alveoli are tiny, delicate air sacs in which the major and main function of the respiratory system occurs: bringing oxygen into the body and removing carbon dioxide. Tiny pores within the walls of an alveolus allow ventilation with the alveolus next to it.
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