| 释义 |
phrenic nerve
Thesaurus| Noun | 1. | phrenic nerve - one of a pair of nerves that arises from cervical spinal roots and passes down the thorax to innervate the diaphragm and control breathingnervus phrenicusnervus spinalis, spinal nerve - any of the 31 pairs of nerves emerging from each side of the spinal cord (each attached to the cord by two roots: ventral and dorsal) |
phrenic nerve
phrenic nerve[′fren·ik ¦nərv] (neuroscience) A nerve, arising from the third, fourth, and fifth cervical (cervical plexus) segments of the spinal cord; innervates the diaphragm. phrenic nerve
phrenic [fren´ik] 1. pertaining to the diaphragm or to the mind.2. diaphragmatic.3. mental (def. 1).phrenic nerve a major branch of the cervical plexus, extending through the thorax to provide innervation of the diaphragm. Nerve impulses from the inspiratory center in the brain travel down it, causing contraction of the diaphragm, so that inhalation can occur.phren·ic nerve [TA] arises from the cervical plexus, chiefly conveying fibers from the fourth cervical nerve, passes downward in front of the anterior scalene muscle and enters the thorax between the subclavian artery and vein behind the sternoclavicular articulation; it then passes in front of the root of the lung to the diaphragm; it is mainly the motor nerve of the diaphragm but sends sensory fibers to the mediastinal parietal pleura, the pericardium, the diaphragmatic pleura and peritoneum, and branches (phrenicoabdominales branches) that communicate with branches from the celiac plexus. Synonym(s): nervus phrenicus [TA]phren·ic nerve (fren'ik nĕrv) [TA] Arises from the cervical plexus, chiefly from the fourth cervical nerve; passes downward in front of the anterior scalene muscle and enters the thorax between the subclavian artery and vein behind the sternoclavicular articulation; it then passes in front of the root of the lung to the diaphragm; it is mainly the motor nerve of the diaphragm but sends sensory fibers to the mediastinal parietal pleura, the pericardium, the diaphragmatic pleura and peritoneum, and branches (phrenicoabdominal branches) that communicate with branches from the celiac plexus.
Synonym(s): nervus phrenicus [TA] . phrenic nerve
Related to phrenic nerve: vagus nerveSynonyms for phrenic nervenoun one of a pair of nerves that arises from cervical spinal roots and passes down the thorax to innervate the diaphragm and control breathingSynonymsRelated Words- nervus spinalis
- spinal nerve
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