What is the function of sympathetic nerve

summary

Sympathetic nerve is a very important part of our body, which is closely related to the activities of many organs and dominates many activities of people. Now let's take a look at the role of sympathetic nerve.

What is the function of sympathetic nerve

Action 1: sympathetic nerve has exciting effect on heart activity, which can accelerate heart beat frequency and strength. For blood vessels, it is mainly to promote the contraction of arterioles, so as to increase the peripheral resistance of blood flow and increase the arterial blood pressure. However, the actual situation is quite complicated and must be treated differently. It is undeniable that the sympathetic nerve dominates their normal work.

When the tension of gastrointestinal smooth muscle is too low, it can inhibit the activity of gastrointestinal smooth muscle. So the sympathetic nerve still has an effect on the stomach.

Action 3: sympathetic nerve can inhibit the smooth muscle of bronchioles, dilate bronchioles and facilitate ventilation. Sweat glands are only innervated by sympathetic nerve, and sympathetic nerve excitation causes sweat gland secretion. The same is true of sweating when people exercise, and the whole process is completed through the operation of sympathetic nerve.

matters needing attention

Sympathetic nerve almost plays an important role in many activities, usually pay attention to more rest, more exercise, can also have a good protective effect on the nerve.