The lung is the essential respiration organ in many air-breathing animals , including most tetrapods , a few fish and a few snails . In mammals and the more complex life forms, the two lungs are located near the backbone on either side of the heart . Their principal function is to transport oxygen from the atmosphere into the bloodstream , and to release carbon dioxide from the bloodstream into the atmosphere. This exchange of gases is accomplished in the mosaic of specialized cells that form millions of tiny, exceptionally thin-walled air sacs called alveoli . To completely explain the anatomy of the lungs, it is necessary to discuss the passage of air through the mouth to the alveoli . Once air progresses through the mouth or nose, it travels through the oropharynx , nasopharynx , the larynx , the trachea , and a progressively subdividing system of bronchi and bronchioles until it finally reaches the alveoli where the gas exchange of carbon dioxide and oxygen takes place. The drawing and expulsion of air ( ventilation ) is driven by muscular action; in early tetrapods , air was driven into the lungs by the pharyngeal muscles via buccal pumping , whereas in reptiles , birds and mammals a more complicated musculoskeletal system is used. Medical terms related to the lung often begin with pulmo- , such as in the ( adjectival form : pulmonary ) or from the Latin pulmonarius ( of the lungs ), or with pneumo- (from Greek πνεύμων lung ).
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Premium Questions (203)
um , the effects of aging on older auldt's heart and lungs when they are 85 years old.
then what capacities have diminished their heart and lungs?
What do they test for in a urine toxicology test? Other than drugs They found Cavernous Lesions in both my lungs and I also have been having very high BP and pulse rate. I also have been experiencing "flushing"...
I am 57 years old, am 5'6", and 140 lbs. Due to arthritis, I'm taking NSAIDS. Yesterday, I noticed a bruise on the back of my forearm, with a lump in the middle. I don't recall bumping myself. Ten years ago, I developed a blood clot in the...
what does it mean in an x-ray that bronchovasscular markings are prominent in bilateral lung fields. Pls see the scan report and give your feedback based on that.
I have done CT scan of my father and have got report as
CT features are suggestive of primary lung malignancy in left upper
lobe with mediastinal infiltration and encasing the lobar pulmonary
ateries
Enlarged mediastinal lymphnodes ,...
I am on day 3 of hcg and am passing blood and blood clots in my stool. Is this common? I am 33 years old and 5'9" and weigh 220 lbs. No medical issues I know of currently
I am 17 and have a small red spot size lump on my mons pubs. only blood comes out when I place a needle into it but very little. never had sex anything ;like that
my mother died of lung cancer
I am scared of what...
my wife has cuffing in the lungs she has done an oxygen test at 86% she seems to have a constant build up of mucous that does not seem to go away.
prickly in lung left top lung when inhaling deeply
i have copd and my lungs press on my stomack , any relief
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Online Doctor Chat (102) - Lung
User : ive had this cerebellar astroycytoma since1993.had surgeory. it came back 1997 had i surgeory 6wks later surgeory again put pentoneal shunt in. ive had breathing problem ever since. i get out of breath when taking fluids.i had xray last wk...
Doctor : hi
User : Hi..
Doctor : how can i help u
Doctor : pl proceed
User : we done some tests to my father[61 yrs].Than told there is a tumour in right lung
User : informed me to do operation and remove it[1/3rd lung will go]..
Doctor : k...
User : hello
Doctor : hi
Doctor : how can i help you
User : I have really bad anxiety, an i am on peroxetine
User : I don't like the medication
User : i have not taken it in three days
User : I was wondering if there was a legal way to...
User : Hello, tp you
User : I'm suffering from costocondritis for the last 1 month. I have taken narcotics and anti inflammatory medicines. Nothing seems to help me. I have very bad pain on my right chest and it radiates to my right arm
User :...
Doctor : Hi
Doctor : How can I help you?
User : hie
User : sir
User : i not feeling comfortable to breath and when i forcefully breath i feel slight pain on chest where respiratory tube passes
Doctor : Ok
Doctor : May I know your age?
User...
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Public Forum (721) - Lung
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i am 31 years old and i live in Myanmar. I always wanna to work aboard . But i had the TB around 6 years. I had finished all treatment . But i had old scars left & right lungs. How to remove the scars from the lungs please let me know if any possibility to remove the scar from the lungs. I mean that for pills or another treatment. My english is...
Hi, about a month ago i started my daughter on gotu kola it was helping her in school for a month to focus and then just lately she was complaining about a shortness of breath which is a side effect. i stop giving it to her. will her breathing get back to normal when it wears out. she doesn t have the shortness of breath all the time
sir, my sister hajara banu 25 years old, she is in critical condition because of lung disease. Now days she gone walk more then 10 steps & she gone talk longer & big issue is breathing . she is leaving in Ramanathapuram she went to madurai city hospital they took some test & giving injection & some tablets. its ok for some days but now she is...
3 Answers
How does second hand marijuana smoking affect a small child. He is usually not in the same room as the smoker, but in the same house
1 Answer
Hello, my mother had fluids removed from the lungs yesterday they said she might go home today , but now they have moved her to the lung section and say there is a scratch on the lung which is a concern , can u tell me what the side effects are and what can happen if the lung is scratched I m not getting any straight answes please
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hi doctor ,, Im really hopeless now , Im 23 years old and wants to work abroad , but then I had a minimal PTB 5 years ago and everytime I undergone medical exam my chest xray will show a scar in my lungs .. because of this scar in my lung it prevents me to work abroad ,, Is there any medicines or actions that I can take to remove the scar ?? any...
1 Answer
I am from New Delhi, India. My wife aged 59 years is suffering from Interstial lung disease (ILD) for last 12 years. Her lungs are working only 65 % and feels too much weekness and lots of breathing problem. Takaing steroids upto 8 mg. Pl .suggest some remedial measures/treatment for my wife. She is inhaling Oxygen at 2 lpm daily for 10-12 hours...
1 Answer
For an extended period of time I ve had pain in the region of my gall/ bladder ,Liver area. I have had Hep.C for 35 years. I also have HIV . Currently the tests that have be done are the CT scan and the sonagram. Both showed nothing but the pain persists but with more frequent spikes in the pain strength. Had liver biopsy approx. 4 years ago and...
1 Answer
Ok So my whole pregnancy I was living in constant fear of getting a blood clot and dieing. I made it through my pregnancy and birth completely fine and healthy. Im three months postpartum, and once again my fear of blood clots have come back. It was because I was at the hospital for chest pains and they mentioned blood clot in the lungs as a...
2 Answers
I m 15 year old female, and quite fit. Lately when I go for a run, within around 3minutes of running , I lose my breathe quite quickly, and begin to get a burning felling in my throat and lungs. I soon struggle to breathe, and alot of pain in my chest . From there I can t push myself to continue the run for on some accounts I have collapsed. So...
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