the function of these central axonal processes is unknown , but based on a comparison of our morphologic data with previous physiological and anatomical studies , we suggest that phrenic afferent fibers may arise from proprioceptors ( muscle spindles and golgi tendon organs ) , nociceptors , or rapidly adapting mechanoreceptors ( pacinian corpuscles ) within the diaphragm .
C0682649
proprioceptors
C0027871
muscle spindles