| C1 | first cervical nerve; first cervical vertebra; first component of complement |
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| CI | first cranial nerve |
| C2 | second cervical nerve; second cervical vertebra; second component of complement |
| CII | second cranial nerve |
| C3 | third cervical nerve; third cervical vertebra; third component of complement |
| cavernous plexus of penis | Two nerves, major and minor, derived from the prostatic portion of the pelvic plexus supplying sympathetic and parasympathetic fibres to the helicine arteries and arteriorvenous anastomoses of the corpus cavernosum stimulating erection. Synonym: nervi cavernosi penis, cavernous plexus of penis. (05 Mar 2000) |
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| medial cord of brachial plexus | In the brachial plexus, the bundle of nerve fibres formed by the anterior division of the inferior trunk which lies medial to the axillary artery; it gives off the medial pectoral nerve, the medial brachial cutaneous, and medial antebrachial cutaneous, nerves and end by dividing into the medial root of the median nerves and the ulnar nerve. Synonym: fasciculus medialis plexus brachialis. (05 Mar 2000) |
| Remak's plexus | A gangliated plexus of unmyelinated nerve fibres, derived chiefly from the superior mesenteric plexus, ramifying in the intestinal submucosa. Synonym: plexus submucosus, Meissner's plexus, Remak's plexus. (05 Mar 2000) |
| renal plexus | The autonomic plexus surrounding the renal artery and extending with it into the substance of the kidney. Synonym: plexus renalis. (05 Mar 2000) |
| pelvic plexus | One of the bilateral autonomic plexus in the pelvis distributed to the pelvic viscera; it receives the hypogastric nerves and the pelvic splanchnic nerves. Synonym: plexus hypogastricus inferior, plexus pelvinus, pelvic plexus. (05 Mar 2000) |
| Meissner's plexus | A gangliated plexus of unmyelinated nerve fibres, derived chiefly from the superior mesenteric plexus, ramifying in the intestinal submucosa. Synonym: plexus submucosus, Meissner's plexus, Remak's plexus. (05 Mar 2000) |
| cervical plexus | A network of nerve fibres originating in the upper four cervical spinal cord segments. The cervical plexus distributes cutaneous nerves to parts of the neck, shoulders, and back of the head, and motor fibres to muscles of the cervical spinal column, infrahyoid muscles, and the diaphragm. (12 Dec 1998) |
| meningeal plexus | A nerve plexus on the cerebral meninges, derived from the external carotid plexus. Synonym: plexus meningeus. (05 Mar 2000) |
| periarterial plexus | An autonomic plexus that accompanies an artery, surrounding it in a network of autonomic nerve fibres. Synonym: plexus periarterialis. (05 Mar 2000) |
| periarterial plexus of maxillary artery | <anatomy, artery> An autonomic plexus on the maxillary artery derived from the external carotid plexus. Synonym: internal maxillary plexus, maxillary plexus, plexus maxillaris internus. (05 Mar 2000) |
| periarterial plexus of vertebral artery | <anatomy, artery> A plexus of autonomic nerves on the vertebral artery derives from the subclavian plexus. Synonym: plexus vertebralis, vertebral plexus. (05 Mar 2000) |
| choroid plexus | <radiology> Formed by the invagination of ependyma into ventricles CP of lateral and third ventricles are continuous, extends posteriorly to temporal horn, 3rd and two lateral ventricles continuous at interventricular foramen CP of fourth ventricle is seperate, shape of a T, vertical limb extends from near Magendie's foramen to the fastigium, horizontal limbs project into cerebellopontine angle cisterns the glomus is a localised enlargement of CP, found at the posterior part of the floor of the ventricle (12 Dec 1998) |
| choroid plexus neoplasms | Neoplasms of the choroid plexus, blood vessels of the pia mater that project into the brain ventricles. (12 Dec 1998) |
| choroid plexus of fourth ventricle | One of two vascular fringes of pia mater projecting on either side from the lower part of the roof of the fourth cerebral ventricle. Synonym: plexus choroideus ventriculi quarti. (05 Mar 2000) |
| choroid plexus of lateral ventricle | The vascular fringe that projects from the choroidal fissure into each lateral ventricle. Synonym: plexus choroideus ventriculi lateralis. (05 Mar 2000) |