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If, it would seem, the cortex secretion now pours into the blood, enough to more than overcome the effects of the medulla secretion, the inter-muscular equilibrium is disturbed in the opposite direction, for fight rather than flight, and anger results.
The perception by associative memory of these effects of adrenalin, the sensations arising from the organs affected, constitute the emotion of fear. Flight follows by muscle prepared for flight, for the disturbance of the inter-muscular equilibrium tenses the flexor muscles, the muscles of flight, and relaxes the extensor muscles, the muscles of attack.
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