17:49 Jan 23, 2024 |
English language (monolingual) [PRO] Medical - Medical (general) / parasympathetic nervous system in unsecure attachment | |||||||
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| Selected response from: Helena Chavarria Spain Local time: 14:45 | ||||||
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3 +2 | parasympathetic dominance |
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Discussion entries: 3 | |
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parasympathetic dominance Explanation: I think 'parasympathetic dominance' is the same as 'parasympathetic bias'. Responses associated with parasympathetic dominance. The dual-sided autonomic nervous system is shown, in which parasympathetic activation outweighs the sympathetic branch. In contrast to sympathetic dominance, a shift to prominent parasympathetic activation leads to peripheral responses associated with membrane potential hyperpolarization and the reversal of the effects seen in Fig. 1. In this state, there is an increase in functional connectivity and alpha waves and a decrease in limbic and amygdala activity. Brain stem activity decreases, which is reflected in decreased respiratory center and cardiovascular center rates. Heart rate, respiratory rate, blood pressure, and muscle tension all decrease. High frequency heart rate variability is increased. This parasympathetic shift can be readily achieved through meditation and deep breathing techniques. A pleasant facial expression and widespread hyperpolarization is associated with this state compared to the relatively depolarized state in Fig. 1. https://www.researchgate.net/figure/Responses-associated-wit... -------------------------------------------------- Note added at 1 hr (2024-01-23 18:53:39 GMT) -------------------------------------------------- Glad to be of help :-) -------------------------------------------------- Note added at 3 days 5 hrs (2024-01-26 23:38:06 GMT) Post-grading -------------------------------------------------- Thanks! I hope you have a good weekend too :-) |
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Reference Reference information: Q. Can the sympathetic and parasympathetic nervous systems function simultaneously? Why or why not? A. The sympathetic and parasympathetic nervous systems have opposite effects on the body. It would not be efficient to operate both systems simultaneously, therefore they do not operate at the same time. Both systems functioning simultaneously would be counterproductive, resulting in no physiological change, as each system would counter the effects of the other. Q. Why is it efficient for the body to have two different autonomic systems? What would be the implications of having only one autonomic system, i.e., a hybrid of the sympathetic and parasympathetic systems? A. The sympathetic and parasympathetic systems elicit specific responses to a given situation. These two opposing systems allow the body to respond optimally and efficiently to the presented situation. Having a single autonomic system would be less efficient. With a single autonomic system, the body may not be able to respond as optimally to a threatening scenario or, conversely, the body may "over-respond" to a relaxed situation, i.e., reading a book. https://study.com/academy/lesson/the-sympathetic-and-parasym... The sympathetic nervous system's primary process is to stimulate the body's fight or flight response. It is, however, constantly active at a basic level to maintain homeostasis. The sympathetic nervous system is described as being antagonistic to the parasympathetic nervous system. The latter stimulates the body to "feed and breed" and to (then) "rest-and-digest". The SNS has a major role in various physiological processes such as blood glucose levels, body temperature, cardiac output, and immune system function. The formation of sympathetic neurons being observed at embryonic stage of life and its development during aging shows its significance in health. While its dysfunction has shown to be linked to various health disorders. https://en.wikipedia.org/wiki/Sympathetic_nervous_system The parasympathetic system is responsible for stimulation of "rest-and-digest" or "feed and breed" activities that occur when the body is at rest, especially after eating, including sexual arousal, salivation, lacrimation (tears), urination, digestion, and defecation. Its action is described as being complementary to that of the sympathetic nervous system, which is responsible for stimulating activities associated with the fight-or-flight response. Nerve fibres of the parasympathetic nervous system arise from the central nervous system. Specific nerves include several cranial nerves, specifically the oculomotor nerve, facial nerve, glossopharyngeal nerve, and vagus nerve. Three spinal nerves in the sacrum (S2–4), commonly referred to as the pelvic splanchnic nerves, also act as parasympathetic nerves. Owing to its location, the parasympathetic system is commonly referred to as having "craniosacral outflow", which stands in contrast to the sympathetic nervous system, which is said to have "thoracolumbar outflow". https://en.wikipedia.org/wiki/Parasympathetic_nervous_system -------------------------------------------------- Note added at 33 mins (2024-01-23 18:23:08 GMT) -------------------------------------------------- Parasympathetic Dominance can be indicated by the presence of symptoms that both show a slowed down, under-energetic nature, and an under-functioning of the Sympathetic side such as frequent illness, slow to heal injuries, dislike of exercise, and lack of motivation. It is important to note that it is possible to swing between states of Sympathetic and Parasympathetic Dominance. Like a pendulum between both extremes and indicates a need to nutritionally support both sides. https://salinachiropractic.com/chiropractic-info/services-an... |
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