【原创】学习内分泌英语单词(内分泌腺体简介)―――庆祝100分的获得!!!

内分泌腺和外分泌腺定义区分:
内分泌腺:responsible for the synthesis and secretion of hormones.
Endocrine glands are composed of islands of secretory cells of epithelial origin with intervening supporting tissue rich in blood and lymphatic capillaries. The secretory cells discharge their hormone product into the interstitial spaces leading to the circulatory system because unlike exocrine glands, endocrine glands have no duct system.
外分泌腺:maintain their continuity with the epithelial surface,
discharging their secretions onto the free surface via a duct.
看来,导管系统the duct system 是区分的一个金指标!