| 释义 |
decussation noun[ U ] anatomy specializeduk /ˌdek.əsˈeɪ.ʃən/ us /dɪˌkʌsˈeɪ.ʃən/ a crossing of structures in the body, such as nerves, to form an X shape: This is the major decussation point of the descending motor fibres. decussation ofThe decussation of these sensory fibres is situated above that of the motor fibres. The fibres from the temporal half of the retina do not undergo decussation, but pass back into the optic tract of the same side. Within the chiasma, the optic nerves undergo a partial decussation. It is formed by the decussation of the aponeurosis of the abdominal muscles of the opposite sides. SMART Vocabulary: related words and phrases Substances & structures in the body abductor accessorius ACL actin adductor funiculus fusiform glomerular glomerulus GnRH navicular neuroendocrine neurohormonal neurohormone nociceptive tendinous tendinum tendo tensor Th |