Charak Samhita
प्राणाः प्राणभृतां यत्र श्रिताः सर्वेन्द्रियाणि च। यदुत्तमाङ्गमाङ्गानां शिरस्तदभिधीयते ॥१२॥
॥ Importance of the Head॥ Shira (head) is foremost among all organs as it is the region of the body where the vital centres and all the senses (indriya) of a living-being are located It is vital (uttama) amongst all the other organs of the body
english translation
prANAH prANabhRtAM yatra zritAH sarvendriyANi ca। yaduttamAGgamAGgAnAM zirastadabhidhIyate ॥12॥
hk transliteration by Sanscript