| jugular foramen | A passage between the petrous portion of the temporal bone and the jugular process of the occipital, sometimes divided into two by the intrajugular processes; it contains the internal jugular vein, inferior petrosal sinus, the glossopharyngeal, vagus, and accessory nerves, and meningeal branches of the ascending pharyngeal and occipital arteries. Synonym: foramen jugulare, foramen lacerum posterius. (05 Mar 2000) |
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| jugular foramen syndrome | <syndrome> Unilateral paralysis of the larynx and velum palati, with contralateral loss of pain and temperature sensibility in the parts below. Synonym: jugular foramen syndrome. (05 Mar 2000) |
| jugular fossa | An oval depression near the posterior border of the petrous portion of the temporal bone, medial to the styloid process, in which lies the beginning of the internal jugular vein (jugular bulb). Synonym: fossa jugularis. (05 Mar 2000) |
| jugular ganglion | <anatomy, nerve> The upper and smaller of two ganglia on the glossopharyngeal nerve as it traverses the jugular foramen. Synonym: ganglion superius nervi glossopharyngei, Ehrenritter's ganglion, intracranial ganglion, jugular ganglion. (05 Mar 2000) |
| jugular gland | A firm supraclavicular lymph node, especially on the left side, sufficiently enlarged that it is palpable from the cutaneous surface; such a lymph node is so termed because it may be the first recognised presumptive evidence of a malignant neoplasm in one of the viscera. A signal node that is known to contain a metastasis from a malignant neoplasm is sometimes designated by an old eponym, Troisier's ganglion. Synonym: jugular gland, Virchow's node. (05 Mar 2000) |
| jugular glomus | A microscopic collection of chemoreceptor tissue in the adventitia of the jugular bulb; a tumour of this glomus may cause paralysis of the vocal cords, attacks of dizziness, blackouts, and nystagmus. Synonym: glomus jugulare. (05 Mar 2000) |
| jugular lymphatic trunk | Lymphatic vessel on each side, conveying the lymph from the head and neck; that on the right side empties into the right lymphatic duct, that on the left into the thoracic duct. Synonym: truncus jugularis, jugular duct. (05 Mar 2000) |
| jugular nerve | <anatomy, nerve> A communicating branch between the superior cervical ganglion of the sympathetic nerve, the superior ganglion of the vagus nerve, and the inferior ganglion of the glossopharyngeal nerve. Synonym: nervus jugularis. (05 Mar 2000) |
| jugular plexus | A lymphatic plexus which includes the deep cervical group of lymph nodes, with their afferent and efferent vessels, extending along the internal jugular vein. (carotid sheath). Synonym: plexus jugularis. (05 Mar 2000) |
| jugular process | A short process jutting out from the posterior part of the condyle of the occipital bone, its anterior border forming the posterior boundary of the jugular foramen. Synonym: processus jugularis. (05 Mar 2000) |
| jugular pulse | The venous pulse as observed in the jugular veins of the neck, usually the deep jugular veins. (05 Mar 2000) |
| jugular tubercle | An oval elevation on the cerebral surface of the lateral part of the occipital bone, on either side of the foramen magnum above the hypoglossal canal. Synonym: tuberculum jugulare. (05 Mar 2000) |
| jugular veins | Veins in the neck which drain the brain, face, and neck into the brachiocephalic or subclavian veins. (12 Dec 1998) |
| jugular venous arch | A connecting vein between the two anterior jugular veins in the suprasternal space. Synonym: arcus venosus juguli. (05 Mar 2000) |
| jugular wall of middle ear | The floor of the tympanic cavity; a thin plate of bone separating the tympanic cavity from the jugular fossa. Synonym: paries jugularis cavi tympani, fundus tympani, inferior wall of tympanic cavity, jugular wall of middle ear. (05 Mar 2000) |