精囊的神经生理学效应

Neurophysiological effects of seminal vesicles

精囊参与射精过程中精液的汇聚,其收缩后排出的精囊液约占精液量的50%~80%,其分泌物果糖是精子成熟必不可少的营养物质,故精囊是与精液量和精子质量有密切关系的雄性附属性腺。精液汇聚过程中,交感神经和副交感神经对精囊上皮分泌功能和平滑肌层收缩功能的调控,以及精囊上皮和平滑肌层中肾上腺能神经受体、胆碱能神经受体、多巴胺能神经受体及各种神经递质受体的分布,对于男性生育能力具有重要影响,现就射精过程中精囊的神经生理学效应的研究进展作一综述。

Seminal vesicles are involved in semen accumulation in the process of ejaculation, contracting and releasing seminal vesicle fluid accounting for about 50 -80% of the semen, and the fructose in their secretions is an indispensable nutrient for sperm maturation. Thus, seminal vesicles are important male accessary glands closely related with the quality and quantity of sperm. In the process of semen accumulation, sympathetic and parasympathetic nerves participate in the regulation of the secretory function of seminal vesicle epithelia and the contraction of the smooth muscle layer as well as the distribution of adrenonergic, cholinergic, dopaminergic and various neurotransmitter receptors in the seminal vesicle epithelia and smooth muscle layer, which play a significant role in male fertility. This review discusses the neurophysiological effects of seminal vesicles in ejaculation.