| PCL | pacing cycle length; persistent corpus luteum; plasma cell leukemia; posterior chamber lens; posteri... |
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| PD | Doctor of Pharmacy; Dublin Pharmacopoeia; interpupillary distance; Paget disease; pancreatic duct; p... |
| PICA | percutaneous transluminal coronary angioplasty; Porch Index of Communicative Abilities; posterior in... |
| PP | diphosphate group; emphysema [pink puffers]; near point of accommodation [Lat. punctum proximum]; pa... |
| PPA | palpation, percussion, auscultation; pepsin A; phenylpropanolamine; phenylpyruvic acid; Pittsburgh p... |
| carotid-vertebral artery anastomoses | <radiology> Trigeminal a. (most common variant: 0.1-0.2%), otic a., hypoglossal a., proatlantal intersegmental a., ** posterior communicating a. (PCA), -- normal anastomosis of carotid to BASILAR artery) (12 Dec 1998) |
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| groove for vertebral artery | <anatomy, artery> The sulcus on the superior aspect of the posterior arch of the atlas that transmits the vertebral artery medially toward the foramen magnum. Synonym: sulcus arteriae vertebralis, sulcus for vertebral artery. (05 Mar 2000) |
| prevertebral part of vertebral artery | See: vertebral artery. (05 Mar 2000) |
| suboccipital part of vertebral artery | <anatomy, artery> Paired arteries which supply the muscles of the neck, spinal cord and cerebellum. (27 Sep 1997) |
| sulcus for vertebral artery | <anatomy, artery> The sulcus on the superior aspect of the posterior arch of the atlas that transmits the vertebral artery medially toward the foramen magnum. Synonym: sulcus arteriae vertebralis, sulcus for vertebral artery. (05 Mar 2000) |
| intracranial part of vertebral artery | See: vertebral artery. (05 Mar 2000) |
| ivory vertebral body | <radiology> Single or multiple very dense vertebra: collapse, metastases, sclerotic metastasis or treated lytic metastasis, preservation of disc space and vertebral body size, Paget's disease, usually single vertebral body, expanded body with thickened cortex and coarsened trabeculation, disc space preserved, lymphoma, preservation of disc space and vertebral body size, infection (low grade), end plate destruction, disc space narrowing, paraspinal soft tissue mass (12 Dec 1998) |
| triangle of vertebral artery | <anatomy, artery> Triangular area in the root of the neck bounded laterally by the scalenus anterior and medially by the longus coli muscles; the two muscles meet at the triangle's apex, formed by the anterior (carotid) tubercle of the transverse process of vertebra C6; the vertebral artery arises from the subclavian artery at the base of the triangle, bisecting the triangle as it ascends to the apex to enter the transverse foramen of vertebra C6. (05 Mar 2000) |
| lamina of vertebral arch | The flattened posterior portion of the vertebral arch extending between the pedicles and the midline, forming the dorsal wall of the vertebral foramen, and from the midline junction of which the spinous process extends. Synonym: lamina arcus vertebrae, neurapophysis. (05 Mar 2000) |
| venous | <anatomy> Of or pertaining to the veins. Origin: L. Venosus (18 Nov 1997) |
| venous angioma | <radiology> Caput medusae, wedge-shaped appearance with its base at the meninges and its apex directed toward the ventricles, prominent medullary vein drains into a markedly enlarged transcortical cerebral vein, angiogram: normal arterial phase without AV shunting (12 Dec 1998) |
| venous angle | The junction of the internal jugular and subclavian veins, toward which converge the external and the anterior jugular and the vertebral veins, the thoracic duct in the left angle and the right lymphatic duct in the right angle. Synonym: Pirogoff's angle. In neuroradiology, the angle of union of the superior thalamostriate vein (vena terminalis) with the internal cerebral vein, usually closely behind the interventricular foramen of Monro. (05 Mar 2000) |
| venous artery | Origin, right ventricle of heart; distribution, it divides into the right pulmonary artery and the left pulmonary artery, which enter the corresponding lungs and branch along with the segmental bronchi. Synonym: truncus pulmonalis, arteria pulmonalis, pulmonary artery, venous artery. (05 Mar 2000) |
| venous blood | Blood which has passed through the capillaries of various tissues, except the lungs, and is found in the veins, the right chambers of the heart, and the pulmonary arteries; it is usually dark red as a result of a lower content of oxygen. (05 Mar 2000) |
| venous capillary | A capillary opening into a venule. (05 Mar 2000) |