2. INTRODUCTION
सरणात् ससरा । सरणात् रसादीनाम् गमनात् ससरा इत्युच्यते ॥
(चरक)
सप्त ससरा शतासन भवन्ति ॥(सुश्रुत)
• The flow of blood without force in the vessels, such
vessels are known as siras.
• The pressure is always less in the siras.
• The Siras are 700 in the body, these may be considered as
veins.
• Acharya Sushruta has classified them as bahirmukha and
antarmukha siras.
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