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9 Cards in this Set
- Front
- Back
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What are the nerve roots of the cervical plexus? |
C1 - C4 |
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What are the branches of the cervical plexus? |
Greater auricular n Transverse cervical n Lesser occipital n Supraclavicular n Ansa cervicalis Phrenic |
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Phrenic nerve |
C3, 4, 5 Innervates: diaphragm, fibrous pericardium, mediastinal pleura Course: begins at the Lat. border of the ant. Scalenes, deep to the prevertebral layer of deep cervical fascia and into the thorax. |
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Lesser occipital nerve |
C2 Innervate: sin over the post.lateral scalp (posterior to the ear) Course: Leaves ventral rami, hooks around the accessory nerve and emerges post. to SCM traveling superiorly. At the occiput it pierces the deep fascia and terminates. |
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What's the relevance of C2 neuralgia? |
C2 or occipital neuralgia presents and chronic pain in the upper neck, back of the head and behind the eyes. It's caused by damage to either occipital nerves or occipital artery. |
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Ansa Cervicalis |
C1, 2, 3 Innervates: infrahyoid mm |
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Great Auricular Nerve |
C2 - 3 Innervates: cutaneous innervation of skin over parotid gland, mastoid process and outer ear. Course: Arises from C2-3, winds around the post. border of SCM, perforates the deep fascia and ascends to the parotid gland. |
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Supraclavicular nerve |
C3 - 4 Innervate: Medial branch - SC joint Intermediate branch - skin over pecoralis major, deltoid Lateral branch - skin over upper post. shoulder Course: Emerges at Erb's pt underneath SCM. It moves inferiorly in the post. cervical triangle and as it approaches the clavicle it branches. |
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Greater Occipital Nerve |
C2 Course: Arises from 1st and 2nd cervical vertebral. It ascends after emerging from suboccipital triangle beneath |
