下丘脑不仅可以产生激素,参与各种内脏、躯体活动的调节,并且还广泛影响中枢神经系各部位的活动。要了解下丘脑的这些作用机理,需要知道下丘脑各核团神经元轴突的投射情况。但是下丘脑各核团大多比较弥散,神经元一般比较小,轴突细而分散; The hypothalamus can not only produce hormones, participate in the regulation of various visceral and somatic activities, but also extensively affect the activities of various parts of the central nervous system. To understand these mechanisms of action of the hypothalamus, we need to know the projections of neurons in the hypothalamus nuclei. However, most of the hypothalamic nuclei diffuse, neurons are generally smaller, fine and scattered axons;