心臓

1. Origins, structure, and basic meaning

• Structure: 心臓, read しんぞう, is the anatomical heart, the organ that pumps blood through the body.
• Basic usage: It may be a removable part of an anatomical model or the organ represented by a red shape in teaching material.

2. Common pitfalls and similar expressions

• Anatomical 心臓 versus emotional 心
  • 心臓 specifically denotes the bodily organ that pumps blood. It should be distinguished from 心, which commonly expresses the mind or emotions; not every English use of 'heart' maps to 心臓.