What exactly is arranged when "brain freeze" occur?
Answers:
When cold stuff touches the roof of your mouth it can set off a backbone reaction (in the spheno-palantine ganglion, to be precise), that cause the blood vessels within your brain to swell. When the blood vessels swell, you seize a headache.
Your facial and scalp muscles contract involuntarily in response to the sudden cold, which produces agony, numbness and discomfort.
The reaction can be sometimes triggered inside a few seconds after a incredibly cold substance consumed comes into contact with the roof of the mouth. The body's response to cold environments is to vasoconstrict the lateral vasculature (to reduce the diameter of blood vessels). This vasoconstriction is within place to reduce blood flow to the nouns, and thus minimize heat loss to save warmth at the body's core. After vasoconstriction, the return to run of the mill status and artery size results in massive dilation (vasodilation) of the arteries that supply the palate (descending palatine arteries). The nerves within the region of the palate (greater and lesser palatine nerves) sense this agony and transmit the sensation of this pain final to the trigeminal ganglia. This results within pain i.e. referred to the forehead and below the orbit, other regions from which the trigeminal nerve receive sensation (This phenomena is partially similar to the referred aching that is present within the left arm when someone is have a myocardial infarction). A similar effect occurs when one take a prescription vasodilator, such as Nitroglycerin or Viagra. It is a stabbing or aching type of distress that usually recedes after 10–20 second after its onset, but sometimes 30–60 second, and can persist for up to five minutes within rare cases. The strain is usually located in the midfrontal nouns, but can be unilateral in the temporal, frontal, or retro-orbital region.
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