EMBRYOLOGY
NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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arousal.
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immobility.
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relaxation.
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energy conservation.
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Detailed explanation-1: -Norepinephrine enhances arousal, in part, via actions of -and 1-receptors located within multiple subcortical structures, including the general regions of the medial septal area and the medial preoptic areas.
Detailed explanation-2: -Adrenaline is released mainly through the activation of nerves connected to the adrenal glands, which trigger the secretion of adrenaline and thus increase the levels of adrenaline in the blood. This process happens relatively quickly, within minutes of the stressful event being encountered.
Detailed explanation-3: -In the brain, norepinephrine increases arousal and alertness, promotes vigilance, enhances formation and retrieval of memory, and focuses attention. It also increases restlessness and anxiety.