生理学的实证研究是生命系统的功能和机制。生理学的学科生物学主要关注生物,如何组织、人体器官、细胞和生物分子进行化学和物理在生活系统功能。该区域可分为医学生理学、动物生理学、植物生理学根据物种类,细胞生理学和比较生理学。细胞生理学和比较生理学、类的物种。身体的器官系统运作的机制也被称为“生理过程。”One of the brain's functional outcomes , for example, is "action" of an entity including human beings. Physiological mechanisms explain any events or outcomes related to the health.. Psychological mechanisms are like traits, except that mechanisms refer more to the processes of personality. For example, most personality mechanisms involve some information-processing activity.