What's the difference between portal and vein?

Portal


Definition:

  • (n.) A door or gate; hence, a way of entrance or exit, especially one that is grand and imposing.
  • (n.) The lesser gate, where there are two of different dimensions.
  • (n.) Formerly, a small square corner in a room separated from the rest of the apartment by wainscoting, forming a short passage to another apartment.
  • (n.) By analogy with the French portail, used by recent writers for the whole architectural composition which surrounds and includes the doorways and porches of a church.
  • (n.) The space, at one end, between opposite trusses when these are terminated by inclined braces.
  • (n.) A prayer book or breviary; a portass.
  • (a.) Of or pertaining to a porta, especially the porta of the liver; as, the portal vein, which enters the liver at the porta, and divides into capillaries after the manner of an artery.

Example Sentences:

  • (1) Maximum increases in portal plasma secretin concentrations of 143, 146 and 190% and maximum increases in VIP of 116, 155 and 147% after, respectively, intraduodenal 0.1 M NaHCO3, 0.1 M Na2CO3, and 0.025 M NaOH were found.
  • (2) The statistical T value calculated for the LP-TAE group showed that the administration of LP, the tumor size, intrahepatic metastasis, portal vein infiltration, and serum total bilirubin and alpha-fetoprotein levels significantly (P < 0.01) affected the patients' survival.
  • (3) In one of the cirrhotic patients, postmortem correlation of sonographic, angiographic, and pathological findings showed that the dilated vessels seen on sonography were cystic veins draining normally into the portal vein rather than portosystemic anastomoses.
  • (4) Portal venous blood flow was reduced by approximately 30%.
  • (5) The concomitant reduction in aortic pressure and increase in heart rate following total occlusion of the portal vein were most pronounced during the first weeks after stenosis, and were probably due to diminished venous return to the heart.
  • (6) In cancer of the pancreas head, cancer cells could invade the portal vein and perineural space of the celiac plexus, and metastasize to regional lymph nodes around the celiac axis.
  • (7) Immediate hemostasis was not influenced by the etiology of portal hypertension.
  • (8) Portal vein ligation resulted in testicular atrophy and low serum testosterone concentrations.
  • (9) In chronic active hepatitis and liver cirrhosis, both carbohydrate antigen 19-9 positive biliary ductular cells and factor VIII-related antigen positive endothelial cells were not only observed in the enlarged portal area but also extended into the parenchyma.
  • (10) Compared with the portal vein, lymphatic duct revealed a greater resistance to hypoxia.
  • (11) The presence of vital and sensitive organs such as the spinal cord, heart, and lungs makes curative radiotherapy of non-small cell lung cancer difficult to implement and necessitates use of oblique portals.
  • (12) Thirty patients were evaluated in a blind fashion to study the effect of oral propranolol on portal hypertension of varied aetiology.
  • (13) These results indicate that the pars tuberalis forms and secretes LH via the hypophyseal portal circulation.
  • (14) Pregnant females displayed a greater hyperinsulinemia both in the portal vein and the artery over the first hour.
  • (15) A low-sodium diet (0.05% Na+, control 0.5% Na+) significantly lowered stimulated [3H]NE release from portal vein and anterior hypothalamus in SHR and WKY at all three ages.
  • (16) Changes in mean portal venous and aortic blood glucose and lactate concentrations after an intragastric infusion of d-glucose to chronically catheterized rats (after regaining preoperative weight) were compared to those of acutely catheterized rats (1 h after catheter placement).
  • (17) On angiography portal-hepatic venous shunt was observed in one case.
  • (18) Terlipressin (Glypressin), a synthetic analog of vasopressin, induces arteriolar vasoconstriction which causes both a portal hypotensive effect and certain side-effects on the systemic circulation (elevated arterial pressure and reduced cardiac output).
  • (19) Portal lipogranulomas show a distinctive morphology with fat vacuoles surrounded by macrophages.
  • (20) A technique of diversion of the gastroduodenal vein in a canine model is described to compare long-term metabolic effects of systemic versus portal pancreatic endocrine drainage.

Vein


Definition:

  • (n.) One of the vessels which carry blood, either venous or arterial, to the heart. See Artery, 2.
  • (n.) One of the similar branches of the framework of a leaf.
  • (n.) One of the ribs or nervures of the wings of insects. See Venation.
  • (n.) A narrow mass of rock intersecting other rocks, and filling inclined or vertical fissures not corresponding with the stratification; a lode; a dike; -- often limited, in the language of miners, to a mineral vein or lode, that is, to a vein which contains useful minerals or ores.
  • (n.) A fissure, cleft, or cavity, as in the earth or other substance.
  • (n.) A streak or wave of different color, appearing in wood, and in marble and other stones; variegation.
  • (n.) A train of association, thoughts, emotions, or the like; a current; a course.
  • (n.) Peculiar temper or temperament; tendency or turn of mind; a particular disposition or cast of genius; humor; strain; quality; also, manner of speech or action; as, a rich vein of humor; a satirical vein.
  • (v. t.) To form or mark with veins; to fill or cover with veins.

Example Sentences:

  • (1) These immunocytochemical studies clearly demonstrated that cells encountered within the fibrous intimal thickening in the vein graft were inevitably smooth muscle cell in origin.
  • (2) The statistical T value calculated for the LP-TAE group showed that the administration of LP, the tumor size, intrahepatic metastasis, portal vein infiltration, and serum total bilirubin and alpha-fetoprotein levels significantly (P < 0.01) affected the patients' survival.
  • (3) Evaluation revealed tricuspid insufficiency, a massively dilated right internal jugular vein, and obstruction of the left internal jugular vein.
  • (4) If tracer is introduced into the carotid artery after osmotic treatment, brain uptake is increased by a net factor of 50 (a factor of 70 due to elevation of PA, multiplied by 7 due to infusion by the carotid route) as compared to uptake by normal, untreated brain with infusion into a peripheral vein.
  • (5) This observation, reinforced by simultaneous determinations of cortisol levels in the internal spermatic and antecubital veins, practically excluded the validity of the theory of adrenal hormonal suppression of testicular tissues.
  • (6) An anatomic study of the peroneal artery and vein and their branches was carried out on 80 adult cadaver legs.
  • (7) An intravenous bolus of 300 micrograms.kg-1 of 3-desacetylvecuronium was rapidly injected into the jugular vein.
  • (8) In one of the cirrhotic patients, postmortem correlation of sonographic, angiographic, and pathological findings showed that the dilated vessels seen on sonography were cystic veins draining normally into the portal vein rather than portosystemic anastomoses.
  • (9) Rapid injection of 2 m Ci TC 99m into a dorsal vein of the foot produced isotope phlebograms with a Dyna camera 2 C.
  • (10) The superior mesenteric artery and the abdominal aorta made the mean angle of 35.5 degree in patients with normal left renal vein, the mean angle of 45.4 degrees in those with left renal vein compression without nutcracker phenomenon, and the mean angle of 11.9 degrees in those with nutcracker phenomenon.
  • (11) Blood samples were collected from an antecubital vein at sea level (S1), in a base camp at 1515 m prior to the summit ascent (S2), on the summit at 3285 m after 6.5 hours of climbing (S3), at base camp immediately after the descent (S4), and at sea level following a trail descent from the base camp (S5).
  • (12) The most frequent source of the pulmonary circulation thromboembolism was the lower limb veins.
  • (13) A patient with a history of hypertension had a combined central retinal artery and vein occlusion in one eye.
  • (14) It is usually associated with a left superior caval vein draining into the coronary sinus and is frequently part of a complex congenital malformation of the heart.
  • (15) It is concluded that the transcutaneous ultrasound technique provides a reliable, rapidly available, non-invasive method to confirm the diagnosis of deep vein thrombosis.
  • (16) A fiberoptic flow-directed catheter inserted into the hepatic vein continuously measures hepatic venous oxygen hemoglobin saturation (ShvO2).
  • (17) The angiographic demonstration of veins was similarly improved by the 2 drugs, the effect of 60 mug.
  • (18) Attention is paid to the set of problems connected with the nonthrombotic insufficiency of the conducting veins of the leg.
  • (19) In the other, the proximal fibula was excised and the epiphysis placed across the saphenous artery and vein in the groin.
  • (20) Our results show that stenosis of about one-third of the original external diameter of the artery and vein of the pedicle in our model did not have any significant influence on the survival of the flap and ligation of the femoral artery distal to the branch to the flap did not produce any statistical difference in the viability of the flap.