For example, standing on the edge of a cliff. Why do our knees buckle? What causing our legs to shake and go weak?
Shouldn’t our instincts do the opposite so we don’t have an accident by falling?
In: Biology
All the stuff about “blood shunting away from your limbs” is BS. A sympathetic nervous system response aka fight or flights preferentially shunts blood TO your skeletal muscle, heart, and lungs. It shunts away from your digestive system.
See: https://en.m.wikipedia.org/wiki/Fight-or-flight_response under Function Of Physiological Changes
Latest Answers