Yeah im coming along with you here. (I think anyway) .

The receptors in the muscles and ligaments that know where that joint ( and its limb) are at any time in space in relation to the brain, heart and tan tien are also linked to the outside world through the nervous systems links out into the receptors and Nociceptors just under the skin.

Physically speaking only with that, in western terms of links (non esoteric) as in..

Brain not mind. Heart feel not deeper dna memory. TanTien power and storage, not gut instincts.

Im of the positive belief that the esoteric portions of all those when linked receive and transmit signals outside the skin but I digress.