Image from a Vintage Science Book, 1884. Traced from a modified version of thegraphicsfairy.com/royalty-free-images-anatomical-heart-vintage/
解剖心臟
anatomical、anatomy、blood、body、books、clipart_issue、drawing、heart、human、Interessant、medicine、muscle、pump、Roots、vintage、vintage by fb
解剖、解剖學、血液、身體、圖書、clipart_issue、畫畫、心、人的、有趣、醫學、肌肉、泵、根、釀酒、由fb復古
資料來源：openclipart ( https://openclipart.org/ )