Sympathetic nerves

Japanese: 交感神経 - こうかんしんけい

The parasympathetic nervous system is a nerve that mediates sympathetic action, and together with the parasympathetic nervous system, it is an efferent nerve that emerges from the spinal cord and controls mainly smooth muscle and glandular cells. It acts in an antagonistic manner to the parasympathetic nervous system, and its center is the hypothalamus in the diencephalon. Sympathetic nerve stimulation causes pupil dilation, stimulation of the cardiovascular system (facial pallor, increased blood pressure, increased pulse rate), increased metabolism, and hyperglycemia, but inhibits the digestive and absorptive functions of the gastrointestinal tract. As a result, conditions suitable for physical activity are created, and the body is actually in a state of sympathetic tension during activity or exercise.
→ Related topics Stimulants | Chlorpromazine | Nervous system

Source : Heibonsha Encyclopedia About MyPedia Information

Japanese:

交感作用sympathyを媒介する神経という意味で，副交感神経とともに自律神経系を構成し，脊髄から出ておもに平滑筋や腺細胞を支配する遠心性神経。副交感神経とは拮抗(きっこう)的に働き，中枢は間脳の視床下部。交感神経の興奮によって瞳孔(どうこう)散大，心臓血管系の促進（顔面蒼白(そうはく)，血圧上昇，脈拍増加），物質代謝の高進，高血糖などが起こるが，胃腸の消化吸収作用は抑制される。その結果，身体活動に適した状態がつくられ，実際に生体はその活動または運動時には交感神経緊張状態にある。
→関連項目覚醒剤｜クロルプロマジン｜神経系

出典　株式会社平凡社百科事典マイペディアについて　情報

<<: Convertibility

>>: Brazen Story - Kogansho