How is the fight-or-flight response related to the big bear (or anything else that is dangerous)?
The text provides a scenario published in a magazine that brings to life the role of the fight-or-flight response when our distant ancestor encountered something life threatening, such as a tiger:
Adrenaline floods his system, causing lipid cells to squirt fatty acids into his bloodstream for quick energy. His breathing becomes shallow and rapid, and his heart beats faster, increasing the flow of oxygen to his muscles, enhancing his strength and speed. His blood vessels constrict, minimizing bleeding if he's injured, and his body releases natural coagulants and painkillers. His sweat glands open, leaving his skin slippery and hard for a predator to grasp. His hair stands on end, making him appear larger and more threatening. His pupils dilate, increasing his ability to scan dark jungle terrain. All this happens in less than a second, and—zip—Dad's off and running, far enough ahead of the tiger to ensure that your bloodline, and mine, makes it to the next generation.
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Indicate whether the statement is true or false