The somatic nervous system consists of the cell bodies located in either thebrainstem or the spinal cord. They have an extremely long course as they do not synapse after they leave the CNS until they are at their termination in skeletal muscle. https://www.sciencedirect.com/topics/veterinary-science-and-veterinary-medicine/somatic-nervous-system
The somatic nervous system is also a part of the peripheral nervous system. One of its roles is to relay information from the eyes, ears, skin and muscleto the central nervous system (brain and spinal cord). It also obeys commands from the central nervous system and makes muscles contract or relax, allowing us to move. https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/nervous-system
The nervous system subdivides into the central nervous system and the peripheral nervous system. The central nervous system is the brain and spinal cord, while the peripheral nervous system consists of everything else. https://www.ncbi.nlm.nih.gov/books/NBK542179/
Exactly! When we categorize the nervous system into the central nervous system(CNS) and the peripheral nervous system (PNS), we’re essentially dividing it based on anatomical location and function. For example, when we talk about motor neurons of the somatic nervous system, which control voluntary muscle movements, we recognize that their cell bodies are located within the CNS (in the spinal cord or brainstem), but their axons extend out into the PNS to reach skeletal muscles. So, in a sense, we are conceptually dividing a single neuron into its different components—the cell body within the CNS and the axon extending into the PNS—when we discuss the broader organization of the nervous system.
交感神経は、興奮状態・運動を作り出すときために活動します。瞳孔を開き、血管を収縮させて血圧を上昇させ、心拍数を上げ、血流増加、血糖値を上げる（エネルギーを使う）のが交感神経です。よく言われるのが、外敵が来たりしてストレスがかかったときに、戦うか逃げるか(fight or flight)という興奮状態（ストレス反応）を作り出すというものです。副交感神経は逆に、これらを抑制して安静の状態や消化吸収を活発にする（エネルギーを蓄積する）状態を作り出すときに活動します。
Autonomic Plexuses LibreTexts Autonomic plexuses are formed from sympathetic postganglionic axons, parasympathetic preganglionic axons, and some visceral sensory axons.
第１１章 自律神経系、視床下部 The Autonomic Nervous System The Hypothalamus 要約：筑波大学基礎医学系神経内分泌学：野上晴雄
膵がんの腫瘍マーカーとして、最もよく使われるのは CA19-9 です。 膵がんを検出する感度としては70-80％あるといわれています。 しかし進行がんを除くと除くと、陽性率は低く、 2cm以下の膵がんでは陽性率が約半分ともいわれています。 ですから、診断やスクリーニングでの有用性は限定的です。(膵癌(すいがん)教室 on the web 5 広島大学 )
Following a meal, pancreatic insulin secretion into the portal vein acutely inhibits VLDL secretion. While the mechanism is complex and incompletely understood, insulin acutely inhibits apoB synthesis, reduces microsomal transfer protein (MTP) expression, and enhances apoB100 degradation (Figure 2). Insulin suppression of both apoB synthesis and secretion has been demonstrated in isolated human and rat hepatocytes, and is associated with increased apoB100 degradation. https://www.sciencedirect.com/topics/neuroscience/very-low-density-lipoprotein
