Astanga Hrudaya
कण्ठनाडीमुभयतो जिह्वानासागताः सिराः। पृथक् चतस्रस्ताः सद्यो घ्नन्त्यसून्मातृकाह्वयाः॥२८॥
On either side of the throat are four siras (veins), located in the tongue and nose separately, known as matrka; their injury leads to quick death.
english translation
kaNThanADImubhayato jihvAnAsAgatAH sirAH। pRthak catasrastAH sadyo ghnantyasUnmAtRkAhvayAH॥28॥
hk transliteration by Sanscript