Medical Mystery
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it's an instinctive human reaction...known as simi simi term...can't remember liowsOriginally posted by renorenal:Okay, here's one... ever wondered that after you have eaten, often enough, you will feel the urge to go to the toilet to poop?
Do you know why?
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erm maybe cos the nostril space is smaller and the air needs to travel further there fore need more air to sustain?Originally posted by renorenal:Why do we have to take it several breaths before we sneeze (ah ah ah ah chooo) as compared to coughing where we don't need them... after all, they serve the same function...
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i think its a requirement for more oxygen due to the depletion of oxygen frommaking atp?Originally posted by renorenal:Why do we yawn when we're tired?
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theoritically the spleen is part of the human body therefore removal is certain to be detrimental since it will lacking of one partOriginally posted by poon cho tang:when can the spleen be removed without any detriment to the human body? -
The spleen can be removed, just that the person will subsequently become more susceptible to certain bacteria infections.Originally posted by hisoka:theoritically the spleen is part of the human body therefore removal is certain to be detrimental since it will lacking of one part -
The spleen is left intact until about the age of 5-6 where one has gained sufficient immunity towards commonly exposed infectious diseases. Thalassaemic patients who enter severe complications of the disorder such as anaemia (secondary to premature splenic removal of Red Blood Cells) are often maintained on IV pack cells transfusion until the abovementioned age.
After that, the patient will have their spleen removed and be put on three types of vaccines - pneumoccocal, streptococcal and meningococcal...
Have fun! -
We yawn because we lack oxygen. When we are tired, the oxygen is not being transported efficiently. To make sure that we recieve enough oxygen, we yawn.Originally posted by renorenal:Why do we yawn when we're tired? -
Two tablets of aspirin a day can help you look younger.
True or False? -
why is yawning infectious?
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Originally posted by alexkusu:
true
[b]Two tablets of aspirin a day can help you look younger.
True or False?[/b] -
Yawning is infectious because we take other people's oxygen. As I said previously, when oxygen is not being transported efficiently, you will yawn. When you yawn, you breathe in the surrounding oxygen around you, making the surrounding oxygen levels to drop. So other people will start to yawn.Originally posted by poon cho tang:why is yawning infectious? -
Originally posted by alexkusu:
There are some experiments on it and results are quite good. But I doubt anyone would want to eat aspirin tablets to look younger.
[b]Two tablets of aspirin a day can help you look younger.
True or False?[/b] -
I certainly dwell in logic when I was in med school, but this is.... oh well....Originally posted by ndmmxiaomayi:Yawning is infectious because we take other people's oxygen. As I said previously, when oxygen is not being transported efficiently, you will yawn. When you yawn, you breathe in the surrounding oxygen around you, making the surrounding oxygen levels to drop. So other people will start to yawn.
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Sneezing is to clear the uppermost portion of the airways (the nasopharynx) while coughing is for the lower airways. If a particulate is trapped in the lower airways, we don't need to take in more air (as this if it happens, which is impossible, this will dislodge the particulate and makes it travel even deeper into the lowermost portion of the airways), hence coughing, which does not involve a series of inspiration, sometimes, only one is enough to generate enough energy or momentum (the distance from the particulate to the mouth is further) to bring out the irritant. Given this fact, you should be able to think out why sneezing requires a series of inspiratory effort.Originally posted by hisoka:erm maybe cos the nostril space is smaller and the air needs to travel further there fore need more air to sustain?
Both are served by different cranial nerves from the brain. -
Then how do you account for diarrhoea?Originally posted by hisoka:this is because we cannot keep the sphinter open for long periods of time
CLUE: Think of the mass clearing effect of the stomach and the rate of peristaltic movement in the gut as a whole (from the mouth to the rectum). -
You mean the opening and closing of the sphincter muscles is rhythmic? Since peristalsis occurs in the oesophagus, why not at the anus?Originally posted by renorenal:Then how do you account for diarrhoea?
CLUE: Think of the mass clearing effect of the stomach and the rate of peristaltic movement in the gut as a whole (from the mouth to the rectum).
haha this is the crappy remains of my a level bio -
No, that's not what I meant... but you are quite close... that is why my clue did not involve the anus, it only involves up to the level of rectum...Originally posted by DriftingGuy:You mean the opening and closing of the sphincter muscles is rhythmic? Since peristalsis occurs in the oesophagus, why not at the anus?
haha this is the crappy remains of my a level bio -
isit due to temperatue change after the loss of the warm urine?Originally posted by renorenal:Why after we complete peeing, the body will go into spasm (I expect this one to be easy, as one of the forumnites had already answered this before)? -
Wrong??? My bio teacher explained it this way leh............Originally posted by renorenal:I certainly dwell in logic when I was in med school, but this is.... oh well.... -
Body temperature drops slightly after you pee, hence you shiver.Originally posted by renorenal:Why after we complete peeing, the body will go into spasm (I expect this one to be easy, as one of the forumnites had already answered this before)? -
Precisely.Originally posted by charlize:Body temperature drops slightly after you pee, hence you shiver. -
That's probably either her own hypothesis or it is meant to be a joke.Originally posted by ndmmxiaomayi:Wrong??? My bio teacher explained it this way leh............ -
Yeah... you are right...Originally posted by sgFish:isit due to temperatue change after the loss of the warm urine? -
hmm so you mean that the stuff is moved rythmically therefore when it comes out it will have to be so also since the delivery is such?Originally posted by renorenal:No, that's not what I meant... but you are quite close... that is why my clue did not involve the anus, it only involves up to the level of rectum... -
Originally posted by hisoka:
The highlighted part is correct and that is what I meant, but you almost get the second part correct.
hmm so you mean that the stuff is moved rythmically therefore when it comes out it will have to be so also since the delivery is such?
The thing is when the poop is transmitted by peristaltic movements, a certain amount of it will rest in the rectum which expands (after a certain amount is stored there) and stimulate the nerve ending for defecation. You will then feel the sensation to poop and evacuate it. The remainings will take quite some time for the peristaltic movements to shift its location to the rectum, and as it is, it stores up and up to a point, the expansion will again stimulate the nerve endings.