What's the difference between pouch and sac?

Pouch


Definition:

  • (n.) A small bag; usually, a leathern bag; as, a pouch for money; a shot pouch; a mail pouch, etc.
  • (n.) That which is shaped like, or used as, a pouch
  • (n.) A protuberant belly; a paunch; -- so called in ridicule.
  • (n.) A sac or bag for carrying food or young; as, the cheek pouches of certain rodents, and the pouch of marsupials.
  • (n.) A cyst or sac containing fluid.
  • (n.) A silicle, or short pod, as of the shepherd's purse.
  • (n.) A bulkhead in the hold of a vessel, to prevent grain, etc., from shifting.
  • (v. t.) To put or take into a pouch.
  • (v. t.) To swallow; -- said of fowls.
  • (v. t.) To pout.
  • (v. t.) To pocket; to put up with.

Example Sentences:

  • (1) Five patients have been examined by defecography before and four after closure of a loop ileostomy performed to cover healing of the pouch and ileoanal anastomoses.
  • (2) Rats were injected subcutaneously with 10 ml of air into the dorsal skin to make an air-pouch and with 2 ml of antiserum at an appropriate dilution for passive sensitization, and then 5 ml of air was removed.
  • (3) In group III, multiple confluent ulcers were produced in the cheek pouch on one side, with a single ulcer in the contralateral cheek pouch; no drug was applied, and the tissues were prepared for histology.
  • (4) The question addressed by this study is whether patients with other pharyngeal pouch malformations could also have immunologic abnormalities.
  • (5) During sixty-six months, 145 Kock pouches were constructed: 79 for continent cutaneous diversion (44 men, 35 women), 54 bladder replacements by men, 12 ileo-rectal diversions (10 women, 2 men).
  • (6) Cheek pouches were removed from BIO 87.20 male hamsters 4 weeks, 8 months or 18 months of age.
  • (7) Acid and pepsin output from the denervated pouch in response to pentagastrin and food decreased significantly (P less than 0.001) after parenteral feeding and returned to control levels after the dogs resumed a normal diet.
  • (8) Type II had the anastomosis too high on the gastric pouch, type III was due to an obstructing marginal ulcer, and type IV had a pouchlike deformity develop in the upper jejunum at the anastomosis that gradually compressed the outflow tract.
  • (9) A series of 60 children whose urine was stored in pouches formed in whole or in part from bowel were reviewed to establish the effect on growth in height and weight.
  • (10) Injection of ovalbumin into subcutaneous air pouches prepared on the backs of rats previously sensitised to the antigen resulted in the induction of a small and transient accumulation of inflammatory fluid with a predominantly polymorph cell infiltrate.
  • (11) sp., from Chalcophaps i. indica, has three or four testes, and a cirrus pouch 93 to 108 mum long, 28 to 45 mum wide, and its egg capsules are 10 to 12 mum long, seven to nine mum wide, each containing four to six eggs.
  • (12) Theoretically, the low-pressure system afforded by the Kock pouch may be superior in long-term safety to that provided by reservoirs made from other bowel segments.
  • (13) Osteo-inductive activity of each protein fraction was determined by implantation in the quadriceps muscle pouch of mice.
  • (14) A study of 78 cases of gastrectomy in which two reconstruction procedures Roux-en-Y + pouch and interposition + pouch were compared and which is still in progress, yielded the following results: 1.
  • (15) Two of three noninoculated pouch mates acquired infections during the study based on examinations of feces and tissue sections of all eight opossums.
  • (16) In conclusion, functional results were satisfactory and quality of life was excellent after ileal pouch-anal anastomosis; neither deteriorated as patients aged over an 8-year period after operation.
  • (17) We present a computer-aided videodensitometric method for the determination of oxygen saturation in red blood cells flowing through capillaries of the hamster cheek pouch retractor muscle.
  • (18) The pouch was then removed and ex vivo measurements were repeated.
  • (19) As part of our investigation of the behaviour of suture materials, 3-0 sutures of polydioxanone and Maxon were enclosed in nylon pouches, a technique developed for in vivo experiments to prevent cellular interaction with implanted devices.
  • (20) Subcutaneous injection of sterile air in rodents results in the formation of an air pouch with a lining morphologically similar to synovium (Edwards et al., 1981).

Sac


Definition:

  • (n.) See Sacs.
  • (n.) The privilege formerly enjoyed by the lord of a manor, of holding courts, trying causes, and imposing fines.
  • (n.) See 2d Sack.
  • (n.) A cavity, bag, or receptacle, usually containing fluid, and either closed, or opening into another cavity to the exterior; a sack.

Example Sentences:

  • (1) Both apertures were repaired with great caution using individual sutures without resection of the hernial sac.
  • (2) Tracheal mucus transport rate (TMTR) and quantitative clearance of aerosolized Escherichia coli from the trachea, lung, and air sac were measured in healthy unanesthetized turkeys and in turkeys exposed by aerosol to a La Sota vaccine strain of Newcastle disease virus (NDV).
  • (3) The wall of the yolk sac thickens as a result of this infolding and the densely packed capillaries.
  • (4) After intravenous or dorsal lymph sac injections of 3H-22:6, most of the retinal label was seen in rod photoreceptor cells.
  • (5) The buccal glands of adults of the Southern Hemisphere lamprey Geotria australis consist of a pair of small, bean-shaped, hollow sacs, embedded within the basilaris muscle in the region below the eyes and to either side of the piston cartilage.
  • (6) Ultrastructural examination of noncartilaginous regions of the tumor demonstrated mesenchymal cells with features suggestive of cartilaginous differentiation, viz, scalloped cell membranes, sac-like distension of abundant rough endoplasmic reticulum, and a matrix containing fibrillary and finely granular material.
  • (7) On the other hand, esophageal emptying of solid isotopic meals may show the persistence of food in the diverticular sac long time after the meal.
  • (8) Both genes are expressed in the fetal liver, gut, and visceral endoderm of the yolk sac and are repressed shortly after birth in the liver and gut.
  • (9) The in vitro absorption by rat jejunal and ileal gut sacs of soluble antigen-antibody complexes and of antigen alone was compared.
  • (10) In two almost identical experiments, all OTC treatment groups had significantly lower mean air sac lesion scores than the unmedicated challenged controls.
  • (11) After clusters of pigmented epithelial cells have rested immobile in the yolk sac of Blennius pholis for 2-4 days (Trinkaus, '88), their constituent cells transform into mesenchymal, dendritic melanocytes.
  • (12) The patient, a 28-year-old woman, in her ninth week of pregnancy, was operated on for stage Ia, mixed germ cell tumor (grade 3 immature teratoma + yolk sac tumor) of AFP decreased to the normal level.
  • (13) Using the experimental model of the everted sac prepared from rat jejuna, kinetic studies on [14C]oleic acid uptake from bile salt micelles were conducted in the presence and absence of phosphatidylcholine.
  • (14) Cadmium, anti-visceral yolk sac antibody (AVYS) and trypan blue all inhibited pinocytosis in a concentration-dependent fashion when added to the culture medium, although at low concentrations trypan blue was slightly stimulatory.
  • (15) In each rabbit, a single fetal sac was opened, the umbilical vessels were cannulated and the placenta was perfused in situ with buffered Krebs solution containing Dextran.
  • (16) Although small amounts of AFP are synthesized by sharks in the liver, the greatest site of synthesis is actually the stomach, with smaller amounts synthesized in the intestinal mucosa; no synthesis was observed in the shark yolk sac.
  • (17) A stem cell line has been obtained with cell culture, having a germ cell character and a yolk sac configuration.
  • (18) We postulate that the apposition of trophotaenial epithelium to the internal ovarian epithelium constitutes a placental association equivalent to a noninvasive, epithelioform of an inverted yolk sac placenta.
  • (19) In vivo recirculating perfusion (n = 5) and in vitro everted sac incubation (n = 8) were employed.
  • (20) In the second hypertrophied form [Type II], the endoplasmic reticulum is very prominent and occurs as a series of grossly dilated sacs of irregular shape.