内分泌

1. Origins, structure, and basic meaning

• Structure: Spelling: 内分泌. Reading: ないぶんぴつ. Core meaning: endocrine system; endocrine secretion.
• Basic usage: Representative examples: 生物学の図には内分泌に関わる器官が色分けされている / 展示模型で内分泌の仕組みを確認した.

2. Common pitfalls and similar expressions

• Secretion and organ system
  • 内分泌 refers to secretion within the body and to the related organ system. Distinguish it from 外分泌, secretion carried through ducts to an outer or surface destination.