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Haydontiger created the topic: Negative G force and heart rate
Hi
This question relates to Revision Test 6, pg 248 STG PPL 1. I searched but didn't find any topics relating to it so far.
So the question is .....effect of sustained negative G load? and answer is a) a slowing of the heart beat. But doesn't the heart beat faster to compensate for any lack of oxygen in the blood whether it is positive or negative? the answer b) a decreased flow of oxygenated blood to the brain made more sense for me.
bobtait replied the topic: Negative G force and heart rate
Under positive g, blood flow to the brain is reduced eventually leading to 'black out'. Under high negative g blood is forced into the head. Sustained negative g can produce blood-shot eyes and ruptures to small blood vessels in the face. There is in fact an over-supply of blood to the head.
