How come we have 2 (possibley 3: mouth, nose and ears(thanx to the eustachian tube) openings for breathing? Shouldn't the nose already suck in an efficient amout of air for the human body? Or is the mouth just back up?
2006-06-30 17:09:37 · 11 answers · asked by mamas628 1 in Science & Mathematics ➔ Biology
All the openings you mention are associated with functions besides breathing. (Although I have a hard time with the eustachian tube as a breathing mechanism.) The mouth is associated with our sense of taste and our ability to consume. The nose is associated with our sense of smell. The eustachian tube helps with our ability to hear, by keeping our ears open and functioning. All three orifices connect to each other and help each other. I wouldn't give up any of them.
2006-06-30 17:18:34 · answer #1 · answered by just♪wondering 7 · 1⤊ 0⤋
While the nose is our main organ for breathing(fast fact- the hair and mucus in the nose are to filter the air), the mouth is used when we need the extra air when running, or as "back up" if our nose is clogged. The two can be used at the same time to bring in more air to replenish the oxygen used by the muscles after physical activity, or an adrenaline rush.
2006-06-30 17:18:00 · answer #2 · answered by toothpickgurl 3 · 0⤊ 0⤋
You really have to go back in evolution to find the exact answer to this question. In short, early animals did not have what we could call a sense of smell, therefore the 'nose' was not something that had evolved early on. Digestion and respiration has been linked since filter feeders used the flow of water over specialized filters to catch food particles and oxygen. This is long before the evolution of terrestrial animals, even before the development of animals with backbones. Fish, for example, do not breath through their nasal passages (nares) but simply use them to detect scent. But there were two of them (nares, that is). The convergence of these two systems occured when air breathing started - and the two nostrils remained through evolution.
2006-06-30 18:29:24 · answer #3 · answered by michelsa0276 4 · 0⤊ 0⤋
It is after so many years of evolution. At ptresent it may be considered to be a perfect body subjected to changes in future .
2006-06-30 17:20:13 · answer #4 · answered by sa 7 · 0⤊ 0⤋
back up for emergencies, like running away from predators or swimming.
(please do not tell me you never worked out hard enough to start breathing with the mouth)
2006-06-30 17:12:03 · answer #5 · answered by Anonymous · 0⤊ 0⤋
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2016-10-14 00:37:58 · answer #6 · answered by ? 4 · 0⤊ 0⤋
the nose is what you are supposed to use...thats why babies are nose breathers. if you were to breathe out of your mouth, you would have a lot of tooth decay....does that help?
btw, you cant breathe out of your ears silly
2006-06-30 17:15:29 · answer #7 · answered by AuroraBorealis 4 · 0⤊ 0⤋
depends on your body structure, and environment. If your big you need moe air than if your small. Also, if you live in a warmer environment you'll need more air to keep your core temp. cooler, than if your in a colder anvironment.
2006-06-30 18:41:24 · answer #8 · answered by Robert 1 · 0⤊ 0⤋
Think about if your nasal passages become blocked.....how would you take in oxygen if not for the mouth
2006-06-30 17:14:58 · answer #9 · answered by Anonymous · 0⤊ 0⤋
the mouth lets you intake air quicker. this helps when you need to consume more oxigen quicker (running sprinting)
2006-06-30 17:15:55 · answer #10 · answered by specal k 5 · 0⤊ 0⤋