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An element present in thyroxine:
Norepinephrine
A hormone and neurotransmitter involved in the body's fight or flight response, regulating heart rate and blood pressure among other functions.
Epinephrine
A hormone and neurotransmitter also known as adrenaline that increases heart rate, muscle strength, blood pressure, and sugar metabolism.
Homeostasis
The physiological process by which living organisms maintain stability in their internal environment despite changes in external conditions.
Hypothalamus
A region of the brain that regulates vital bodily functions such as temperature, hunger, thirst, and the sleep-wake cycle.
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