 Verses 29-30 of the text assert that all the organs depend on "prana" (breath or life), and that it is prana that connects them to the unseen one, the soul.The three internal emergent faculties ("Trayasya"), states Karika in verse 29, are mind, ego and the ability to reason.The sensory and action organs perform their respective function, by cooperating with each other, fueled by the life-force, while the soul is the independent observer.