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What is a brain structure that activates the nervous system in response to stress?
Wiki User
∙ 11y ago
When a person is under stress, the hypothalamus signals the adrenal glands to release hormones, mainly cortisol, growth hormone, and norepinephrine. Cortisol is believed to affect the metabolic system causing faster heartbeat, quicker breathing and higher blood pressure and metabolism. Norepinephrine is believed to play a role in depression and hypertension. Blood vessels also expand while under stress, allowing blood to flow towards muscles. This keeps the muscles alert. Pupils are dilated, enhancing vision. Liver releases glucose, providing energy to the body. Sweating is evident as it serves to cool the body. These changes are the manifestations of an individual's stress response. This response allows the person to react quickly to stressful situations. Stress hormones increase in the body during any neuroendocrine reaction and they remain high for up to 72 hours. After 72 hours, hormones return to their normal levels. When the person is exposed to a stressful situation for prolonged amounts of time, the effects can have a wear and tear on the body. The neuroendocrine reactions are an adaptation that allowed humans to react when in danger. If a person was getting attacked, their energy should not be focused on digestion or metabolism. It should be used to survive. So, if the stressor is not removed, the person's body will be harming itself and not maintaining balance normally. One indication that a person has not recovered from a stressful situation is that they will get fatigue or illness. The body is not functioning normally and this can lead to weakened immune system and not getting enough sleep. Stress can also cause headaches, an upset stomach, and Back pain. It can also make a person moody, tense, or depressed. Their relationships may suffer, and they may not do well at work or school. If these symptoms do not dissipate, one would assume that they have not recovered from the stressful situation.
Wiki User
∙ 14y ago
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Does the parasympathetic division of the autonomic nervous system initiate the stress response?
No..,. False
Neurotransmitter released in response to stress?
The endocrine system releases adrenaline when the nervous system experiences stress
What two body system are active during the stress response?
your nervous system and you endocrine
What is the hormones that are part of the body's long term response to stress?
Sympathetic Nervous System is the part of autonomic nervous system that prepares the body for action and stress.
How does the sympathetic nervous system work for an against us in today's world?
The sympathetic nervous system still allows us to have a fight or flight response, but it can also lead to an excessive stress response.
Does stress and medications affect blood pressure?
Stress activates the sympathetic nervous system which does increase the blood pressure. Many medications effect blood pressure, too many to name.
What two body systems initiate the majority of the body's homeostatic responses?
The central nervous system (CNS) and Endocrine system are active in the body's response to stress.
What is the reaction of the body and mind to threatening challenging or disturbing events?
It is called the alarm response and involves the sympathetic nervous system. The main controller of the alarm response, or the stress response, is the HPA axis, which consists of neural and hormonal communication between the pituitary, hypothalamus, and adrenal glands.
What divisions of the Autonomic nervous system stimulates a stress response?
Touching hair, not talking much, And there is more reasons it's just how they are
Does the thymus stimulates metabolism growth and activity of the nervous system?
yes other than controlling electrolytes, the adrenal gland helps to regulate metabolism and interacting with sympathetic nervous system in response to stress.
Which cells react negatively to stress?
The part of the human brain which controls the body's response to stress is the limbic system in the central nervous system and the sympathetic nervous system of the peripheral nervous system. The sympathetic nervous system has a hand in most biological responses related to stress, such as pupil dilation and secretion of adrenaline from the adrenal glands. The nervous system originates primarily from the spinal cord, but it has no specific nervous center. The limbic system regulates chemicals related to the activation of the sympathetic nervous system. The amygdala is often referred to the emotional center of the brain, producing responses such as rage or fear which prepare the body for a response to stimulus. The orbitofrontal complex is related to decision and action, and the hypothalamus controls arousal. All of these are related to stress response. During this response, several things may occur. Pupils dilate, digestion ceases, and the bladder may relax. The circulatory system will up-regulate, increasing breathing rates, heart rate, blood flow, and blood pressure. Muscle blood vessels will dilate, preparing the body for quick reaction. Extended periods of arousal at high or low levels ultimately lead to exhaustion.
Which stage in stress response does the fight or flight response occur?
The ALARM response
