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急腹症的突出表现是急性腹痛,腹痛的表现又多种多样,变化多端,同一疾病可以表现为不同的腹痛,不同的疾病也可表现类似的腹痛,所以需对急性腹痛的机制有一基本的了解,才能掌握其规律,有助于得出正确的诊断。来自腹腔的生理性和病理性刺激由内在神经丛经过三条途径传入中枢神经系统,即交感神经、副交感神经和腹膜壁层的躯体神经。内脏的反射和张力的冲动主要由副交感神经传入,但疼痛的感觉主要靠交感神经。腹腔的感觉有三种: 一、内脏痛或称真性内脏痛。内脏的感觉神经末稍广泛分布于空腔脏器的粘膜、肌层和浆膜,肠系膜根部以外的肠系膜,实质脏器的被膜以及小血管的外膜。刺激作用于内脏的传入神经末稍,由传入纤维即交
Acute abdomen is the outstanding performance of acute abdominal pain, abdominal pain performance and variety, variety, the same disease can show different abdominal pain, different diseases can also show similar abdominal pain, so the mechanism of acute abdominal pain need to have a basic Understand, can grasp its law, help to draw the correct diagnosis. Physiological and pathological stimuli from the abdominal cavity are introduced into the central nervous system by the intrinsic nerve plexus via the three pathways, the somatic nerves of the sympathetic, parasympathetic and peritoneal parietal layers. Visceral reflexes and tension impulses are mainly introduced by parasympathetic nerves, but the pain is felt mainly by the sympathetic nerves. Peritoneal feel in three ways: First, visceral pain or true visceral pain. Visceral sensory nerve endings are widely distributed in the hollow viscera mucosa, muscle and serosa, mesentery other than the mesenteric membrane, the capsule of real organs and the outer membrane of small blood vessels. Stimulation of visceral afferent nerve endings, by the incoming fibers that pay