Why did a heart shape, which looks nothing like a physical heart, become the undisputed symbol for a heart?
In: 113
Sometime ago, examinations were done on animals because in humans it was taboo. Unlike people, frogs have two auricles and one ventricles:
[Frogg Hearth](https://c8.alamy.com/compes/rhk5em/la-biologia-de-la-rana-las-ranas-el-sistema-circulatorio-285-despues-de-cada-pulsacion-del-corazon-y-luego-lentamente-contratos-hyrtl-sabatier-tambien-sirve-para-igualar-el-flujo-sanguineo-especialmente-en-la-carotida-interna-la-glandula-de-la-carotida-fig-92-diagrama-del-sistema-arterial-de-la-rana-vista-ventral-despues-de-howes-desarrollado-en-la-larva-a-traves-de-la-anastomosis-de-vasos-aferentes-y-eferentes-conectan-las-arterias-del-primer-gill-arch-entre-los-vasos-sanguineos-son-celulas-derivadas-del-epitelio-de-las-hendiduras-branquiales-maurer-por-favor-tenga-en-cuenta-que-estas-imagenes-se-extraen-de-escaneados-rhk5em.jpg)
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