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→Formation of skin during embryogenesis
=== Formation of skin during embryogenesis ===
=== Formation of skin during embryogenesis ===
Seven layers of skin are formed during embryogenesis. The layer holding mamsa dhatu (Mamsadhara) is the seventh and innermost layer. It is estimated to have thickness of 1 to 3 mm or two vrihi(grains of paddy). [One vrihi = 0.5 to 1.5 mm]
Seven layers of skin are formed during embryogenesis. The layer holding mamsa dhatu (Mamsadhara) is the seventh and innermost layer. It is estimated to have thickness of 1 to 3 mm or two vrihi(grains of paddy). [One vrihi = 0.5 to 1.5 mm] This layer is affected in diseases like bhagandara(fistula), vidradhi(abscess) and arsha(hemorrhoids). [Su. Sa. Sharira Sthana 4/8]
This layer can be observed as a deeper reticular layer of dermis.<ref>Kuldeep KumarA Critical Study Of Tvak In The View Of Modern Science Ayurpub.com Mar-Apr 2018 Vol III, Issue 2 available from http://ayurpub.com/wp-content/uploads/2018/04/844-849.pdf</ref>
This layer can be observed as a deeper reticular layer of dermis.<ref>Kuldeep KumarA Critical Study Of Tvak In The View Of Modern Science Ayurpub.com Mar-Apr 2018 Vol III, Issue 2 available from http://ayurpub.com/wp-content/uploads/2018/04/844-849.pdf</ref>
=== Metabolic byproducts and waste products (Upadhatu and mala) ===
=== Metabolic byproducts and waste products (Upadhatu and mala) ===