Artava dhatu

The female reproductive tissue, including the ovaries, ova, fallopian tubes, uterus, cervix, and vagina; along with shukra (the male reproductive tissue), the deepest dhatu (human tissue) in the Ayurvedic tradition, and the last one to receive nourishment through cellular nutrition; responsible for procreation and emotional release; associated with the production of ojas.

Source: http://www.banyanbotanicals.com/info/ayurvedic-living/learning-ayurveda/glossary-of-ayurvedic-terms/