<span>ASEAN is an Association of Southeast Asian Nations - a multination association that has as its aim an economic cooperation between Southeast Asian countries (such as Thailand). This association did not arise as a response to external factors, so any reason connected to externam factors would not apply - such as the reliance on some external powers (such as the US). It is focused on the cooperation between the members only - not an external association.</span>
Answer:
Responses to stress are attributed to activation of the sympathetic nervous system and are mediated by adrenal medulla which is the central portion of the adrenal gland.
Explanation:
<em><u>Stress</u></em> is a physical, mental, and emotional response to a <em><u>threat</u></em>, and causes bodily and mental tension. There are different causes of stress, for example, an exam, a divorce, moving from a house, being fired, somebody’s death.
The body’s stress response is mediated by the sympathetic nervous system (SNS), and the hypothalamic-pituitary-adrenal (HPA) system. The SNS is responsible for the neural<u><em> </em></u><em>fight-or-flight response</em> to stress.
In a stressful situation the <u><em>hypothalamus</em></u>, which is in charge of the stress response, sends signals to the pituitary gland and the adrenal medulla. The adrenal medulla secretes the neurotransmitters and hormones adrenaline and noradrenalin to the bloodstream. These hormones get the body ready for a response to stress, by<em> increasing heart biting</em> frequency and strength, i<em>ncreasing blood pressure</em>, <em>stimulating respiration</em>, and <em>dilating respiratory tracts</em>.
Once the threat factor is over, the body gets back into a balanced state.
