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How the Body Works : Microanatomy of the Lungs
Microanatomy of the Lungs
Presented here is the microanatomy of the lungs and its components. Alveolar sacs are the terminal portions of the breathing tube system. Composed of up to thirty tiny air pouches, or alveoli, they provide a lung a total surface area of about 850 square feet for the exchange of gases. Alveolar walls, composed of a single layer of cells, and the thin boundaries of capillaries---a barrier only one twenty-five thousandth of an inch thick---are all that separate blood and air. Exchange of carbon dioxide and oxygen across this barrier is completed in only a fraction of a second. Terminal bronchioles carry air to and from alveolar sacs. Cells lining bronchiole walls bear cilia---minute hairs whose beating action prevents large dust particles from entering the alveolar sacs. Macrophages on the inner alveolar surface ingest and destroy dust, soot and other foreign particles. These cells are the body's main line of defense against airborne bacteria drawn into the lungs. Connective tissue fibers form a frame around the alveoli and support their delicate walls. Lymph vessels carry excess tissue fluid away from alveoli. Pulmonary venules take oxygen-rich blood back to the heart. Pulmonary arterioles conduct carbon dioxide rich, oxygen depleted blood to the aveoli. Blood capillaries form a meshwork around the aveoli. As blood flows through the capillaries its loses carbon dioxide and takes up oxygen. and changes from dark to bright red in color.
Length: 108
Rating: 4.80 (18 ratings)
Tags: Microanatomy of the Lungs
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How Smoking damages the lungs
How smoking damages the lungs
Length: 384
Rating: 4.80 (66 ratings)
Tags: health
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Lungs
Respiratory system - lungs
Length: 61
Rating: 4.00 (6 ratings)
Tags: lungs
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Megadeth -Into the Lungs of Hell Live
I could'nt find this song live on youtube, so I mixed and crammed together the song asnd a live video of Wake up Dead. Enjoy!!
Length: 166
Rating: 4.40 (25 ratings)
Tags: Megadeth Into the Lungs of Hell Live wake up dead
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Tim Christensen - Whispering At The Top Of My Lungs
Den ORIGINALE video til Den fantastiske Tim C sang Whispering at the top of my lungs fra Honeyburst 2003
Band:
Tim Christensen - Vocal, Guitar
Lars Skjærbæk - Guitar, vocal, Mellotron
Nikolaj Munch-Hansen - Bas
Olaf Olsen - Trommer
Length: 326
Rating: 4.90 (125 ratings)
Tags: tim christensen whispering at the top of my lungs single video original honeyburst 2003 03
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Smokin' Lungs Montage 2
Whadup! Heres the second vid
Music: Lil Flip - This is the way we ball.
Length: 277
Rating: 4.70 (70 ratings)
Tags: Bong hoots bong rips weed hoot
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Smokin' Lungs Montage 4
Were back again, took awhile but yeah...this is June and July
music: Rest of my life - Kottonmouth kings
Length: 342
Rating: 4.80 (37 ratings)
Tags: weed marijuana hoots bong hit
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