Once prANa enters the body, it differentiates into various functional aspects. The Upanishad says:
पायूपस्थेऽपानं चक्षुःश्रोत्रे मुखनासिकाभ्यां प्राणः स्वयं प्रातिष्ठते मध्ये तु समानः । एष ह्येतद्धुतमन्नं समं नयति तस्मादेताः सप्तार्चिषो भवन्ति ॥ — 3.5, prashna.
[Meaning: He places apAna in the two lower apertures. prANa Himself, issuing out of the mouth and nostrils, resides in the eyes and ears. In the middle, however, is samAna, for this one distributes equally all the food that is eaten. From that issue out these seven flames.]
Thus, the one life-principle appears as many, assuming different roles within the body—while its source remains the same unmoving Self.
[Note: The gonads (2) + ears (2) + eyes (2) + the in-between (1) together constitute The Seven Flames. Fire is said to have seven tongues. The Sun (a form of Fire) is said to ride a chariot of seven horses.] Continue reading