Which hormone is most commonly associated with the "fight or flight" response to stress?
Correct answer: B. Adrenalin
- A. Insulin
- B. Adrenalin
- C. Calcitonin
- D. Prolactin
Explanation
Adrenaline controls the fight-or-flight response due to its rapid and potent effects on the body. When faced with a perceived threat, the adrenal glands release adrenaline into the bloodstream. This hormone increases heart rate, blood pressure, and blood flow to muscles while dilating air passages, preparing the body for intense physical activity or rapid escape. Adrenaline also enhances alertness and sharpens sensory perception, enabling swift and adaptive responses to dangerous situations.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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