| INV | inferior nasal vein |
|---|---|
| IR | drop of voltage across a resistor produced by a current; ileal resection; immune response; immunizat... |
| IRV | inferior radicular vein; inspiratory reserve volume; inverse ratio ventilation |
| ITA | inferior temporal artery; internal thoracic artery; International Tuberculosis Association |
| ITQ | inferior temporal quadrant |
| cervical rotator muscles | The rotator muscles attached to the cervical vertebrae. Synonym: musculi rotatores cervicis, cervical rotator muscles. (05 Mar 2000) |
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| cervical segments of spinal cord | The eight cervical segments [C1-C8] of the spinal cord which give rise to the eight pairs of cervical spinal nerves and constitute the cervical part of the spinal cord. Synonym: segmenta medullae spinalis cervicalia. (05 Mar 2000) |
| cervical sinus | In young mammalian embryos a depression in the nuchal region caudal to the hyoid arch, with the third and fourth branchial arches and ectodermal grooves in its floor; normally it is obliterated after the second month, but occasionally cervical fistulae persist as vestiges of it. Synonym: precervical sinus. (05 Mar 2000) |
| cervical smear | Cytological staining procedure for detecting and diagnosing various conditions, especially malignant and pre-malignant conditions of the cervix. (16 Dec 1997) |
| cervical spine fractures | <radiology> Hyperflexion injury (46-79%), odontoid fracture, simple wedge fracture (stable), tear drop fracture, anterior subluxation, bilateral locked facets (unstable), anterior disc space narrowing, widened interspinous distance, clay shoveler's fracture hyperextension injury (20-38%), anteriorly widened disc space, prevertebral swelling, tear drop fracture, neural arch fracture of C1, subluxation (anterior/posterior), hangman's fracture flexion-rotation injury (12%), unilateral locked facets (stable) vertical compression (12%), Jefferson fracture, burst fracture lateral flexion/shearing (4-6%), uncinate fracture, isolated pillar fracture, transverse process fracture, lateral vertebral compression location (by frequency): C2,C6 greater than C5,C7 greater than C3,C4 greater than C1 see: atlas fracture, axis fracture, unstable fractures (12 Dec 1998) |
| cervical spine fusion | <radiology> (ankylosis) Posterior elements, JRA, vertebral bodies, block vertebrae, Klippel-Feil (12 Dec 1998) |
| cervical splanchnic nerves | Segments of the visceral branches arising from the superior, middle, and inferior (stellate) cervical ganglia; they are part of the cardiopulmonary splanchnic nerves. Synonym: augmentor nerves. (05 Mar 2000) |
| cervical spondylosis | Degenerative joint disease of the cervical (neck) spine. Results in a progressive erosion of the cartilage which line the weight bearing joints in the neck. Progressive bony calcification can lead to obstruction of exiting nerve roots resulting in neurological symptoms. (27 Sep 1997) |
| cervical tension syndrome | <syndrome> A clinical complex of pain, tenderness, tight neck musculature, vasomotor instability, and ill-defined symptoms such as dizziness and blurred vision as the result of trauma to the neck. Also variously termed occipital or suboccipital neuralgia or neuritis; cervical tension syndrome; cervical myospasm, myositis, or fibrositis. Synonym: cervical fibrositis, cervical tension syndrome. (05 Mar 2000) |
| cervical triangle | Any of the triangles of the neck. (05 Mar 2000) |
| cervical ulceration | A partial or complete absence of the mucosa which normally covers the cervix. These lesions or ulcers, may occur as the result of trauma (for example intercourse, tampon insertion), infection or chemicals (for example spermicidal creams or foams, douches). There appears to be a increased risk of cervical erosion with vaginal use of chemical agents or those with multiple sex partners. Symptoms of cervical erosion include vaginal bleeding and post-coital bleeding. Often there may be no symptoms at all. Erosions or ulcerations of the cervix are generally noted on the pelvic examination and can be an indicator of cervical cancer. For this reason a PAP smear will be recommended. most cervical erosions will heal spontaneously without intervention. (27 Sep 1997) |
| cervical vertebrae | The seven segments of the vertebral column located in the neck. Synonym: vertebrae cervicales. (05 Mar 2000) |
| cervical vesicle | An abnormally persisting vestige of the cervical sinus or its associated branchial grooves. (05 Mar 2000) |
| cervical zone | The lower fourth of the pregnant uterus, attachment of the placenta to any part of which may cause dangerous haemorrhage. Synonym: cervical zone. (05 Mar 2000) |
| cervical zone of tooth | The slightly constricted part of a tooth, between the crown and the root. Synonym: cervix dentis, cervical margin of tooth, cervical zone of tooth, collum dentis, dental neck. (05 Mar 2000) |