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The Endowment for Human Development
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Blood Formation in Liver


6 weeks, 6 days

From The Biology of Prenatal Development.Buy Now

Script: À 6 semaines, la formation des cellules sanguinaires a commencé dans le foie où les lymphocytes existent maintenant. Ce type de globule blanc a une importance primordiale dans le développement du système immunitaire.

Le diaphragme, muscle principalement utilisé par la respiration, est pratiquement formé à 6 semaines.

All ages referenced to fertilization, not last menstrual period.
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