their diapers
2007-10-11 09:38:24
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answer #1
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answered by Anonymous
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The phenomenon of blushing is universal, and it appears to be an involuntary sympathetic nervous system response.
Blushing is caused by dilation of the small blood vessels in the face, leading to increased local blood volume. It is not the result of general vasodilation, because the blush area is confined to the face. The facial vein that supplies the small blood vessels in the face is responsive to beta-adrenergic stimulation, a property not common in venous tissue, and this is likely to be the neural basis of the response.
Beta-adrenergic stimulation occurs when adrenaline binds to receptors on the surface of responsive cells. This triggers the activation of an enzyme called adenylyl cyclase, which increases the level of cyclic AMP, a small molecule that acts as a messenger to transmit the adrenaline signal within the cell.
2007-10-11 09:40:47
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answer #2
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answered by Anonymous
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A confused state of mind acts upon the sympathetic nervous system. From there, the vasodilators are stimulated which causes the peripheral capillaries to expand. As a result, more blood flows to the surface of the face and neck, resulting in the reddening of the face and neck.
So, more simply put, we blush because our blood pressure rises causing the capillaries just under our skin to expand and fill with more blood.
2007-10-11 09:40:52
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answer #3
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answered by AmericanPatriot 6
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The phenomenon of blushing is wisely-nicely-known, and of course to be an involuntary sympathetic demanding equipment reaction. Blushing is delivered approximately by utilising dilation of the small blood vessels contained interior the face, ensuing in greater valuable indoors of sight blood quantity. it extremely is not the tip results of universal vasodilation, because of the fact the blush area is constrained to the face. The facial vein that factors the small blood vessels contained interior the face is unsleeping of beta-adrenergic stimulation, a materials no longer directly forward in venous tissue, and it extremely is possibly to be the neural beginning of the reaction. Beta-adrenergic stimulation occurs on a similar time as adrenaline binds to receptors on the floor of responsive cells. This triggers the activation of an enzyme mentioned as adenylyl cyclase, which will improve the factor of cyclic AMP, a small molecule that acts as a messenger to transmit the adrenaline sign indoors the cellular.
2016-11-08 00:46:11
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answer #4
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answered by ? 4
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The 'blushing' comes from increased blood to the face. When you're embarassed, your heart usually quickens, sending more blood through your system. It's seen more readily in the face.
2007-10-11 09:39:41
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answer #5
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answered by Arnold M 4
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When you are embarrased your heart rate speeds up and your body temperature rises slighty. As your blood pressure also increases, the blood vessels under the skin move closer to the surface so that they can be cooled to try and get your body temperature under control, It is simply more notcieable in the face
2007-10-11 09:40:11
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answer #6
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answered by whats my name again 5
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people blush because they get embarass by boys or girls!
and they might feel they did something wrong like say something out really loud in class room and not suppose too!
people may blush when they dress weird or funny !
2007-10-11 09:40:10
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answer #7
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answered by kiki li 1
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Eternal Vertigo,Not really cause astrology is a no no in the lords eyes ! To awnser your question we blush from our heart pumping blood quickly to our brain !
2007-10-11 09:45:52
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answer #8
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answered by lonewolf 7
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Increase in blood flow to the face triggered by reaction in brain with emotions that are being felt.
2007-10-11 09:40:02
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answer #9
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answered by Teddy's Mom 4
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the same part of the brain controls being angry as controls being embarrassed. Since only humans can feel "embarrassed" our brain hasn't fully been able to distiguish this emotion from anger, as far as physical side-effects are concerned. So our faces get red and our bodies tense up, as if we're angry, even though we're not angry.
2007-10-11 09:42:21
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answer #10
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answered by Anonymous
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Blood vessels inside the face.
2007-10-11 09:38:24
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answer #11
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answered by Andre 7
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