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The cervical ganglia are paravertebral ganglia of the sympathetic nervous system. These emerging postganglionic nerves synapse with preganglionic nerves from the thoracic spinal cord. They consist of three paravertebral ganglia: * superior cervical ganglion (largest) - adjacent to C2 & C3; postganglionic axon projects to target: (heart, head, neck) via "hitchhiking" on the carotid arteries * middle cervical ganglion (smallest) - adjacent to C6; target: heart, neck * inferior cervical ganglion. The inferior ganglion may be fused with the first thoracic ganglion to form a single structure, the stellate ganglion. - adjacent to C7; target: heart, lower neck, arm, posterior cranial arteries Nerves emerging from cervical sympathetic ganglia contribute to the cardiac plexus, among other things. Unlike all other ganglia, the medial branches of the cervical ganglia are 95% postganglionic axons. ==Additional Images== File:Slide1EBAB.JPG|Muscles, arteries and nerves of neck. Newborn dissection. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「cervical ganglia」の詳細全文を読む スポンサード リンク
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