(a.) Hollow and curved or rounded; vaulted; -- said of the interior of a curved surface or line, as of the curve of the of the inner surface of an eggshell, in opposition to convex; as, a concave mirror; the concave arch of the sky.
(a.) Hollow; void of contents.
(n.) A hollow; an arched vault; a cavity; a recess.
(n.) A curved sheath or breasting for a revolving cylinder or roll.
(v. t.) To make hollow or concave.
Example Sentences:
(1) In the absence of glutamine the aggregate is readily dissociated following dilution of the extract; that is, velocity concaves upward as a function of increasing protein concentration.
(2) Under the SEM, the unstained area of rods is always showing a concavity, which is just a nucleoid in sections under the TEM.
(3) Three cases are presented in which a focal concave deformity occurred along the greater curvature of the stomach on upper gastrointestinal (GI) series.
(4) This change in shape varied from a slight flattening of the LV and IVS during diastole to total reversal of the normal direction of septal curvature such that the IVS became concave toward the RV and convex toward the LV.
(5) The technique combines the conventional plotting the contour lines and the highlighting, by means of hatching, of the concavities (or convexities) of the 'surface' representative of radioactive distribution.
(6) The trapezoidal shape of the vertebrae and scarring of the soft tissues within the concavity made correction difficult.
(7) On freeze-fracture preparations, the fragments with concave profile, corresponding to the external fracture face of plasma membrane, displayed an intramembrane particle density (ranging from 0 to 750 particles per micron2) which is similar to that recorded on the corresponding fracture face of intact cells from the common lymphoblastic leukemia antigen positive leukemic cell line (Nalm-1) or of vesicles shed in the culture medium by Nalm-1 cells.
(8) In testicular and cauda spermatozoa NBD-phallacidin fluorescent material was present in the two ventral processes that extended from the upper concave surface of the sperm head; also fainter material occurred along the concave border and as a dorsocaudal spur.
(9) When viewed in the lateral projection, the concavities superimpose, lying in the posterior portion of the vertebral body.
(10) Dose-effect relationships for most of the sampling times were linear and sometimes linear-quadratic concave upward or downward.
(11) This should be prevented by a bone-graft operation along the concave side of the tibia.
(12) Since February 1982, 23 patients with scoliosis were treated by releasing the soft tissues on the concave side and plaster spinal fusion jacket.
(13) The DRT curves of all data were concave and appeared to have two discrete slopes (z(D) values).
(14) Between the concave surfaces of two bent cadaverine molecules exists water channels all along the short b axis.
(15) Homotropic cooperative effects were observed as shown by the concave downward curvature of the reciprocal plots.
(16) The late mortality is 3.8% per patient-year--standard disc group 2.9% per patient-year and convexo-concave group 4.3% per patient year (no significant difference).
(17) The relationship between chloride transport and extracellular chloride in the presence of bromide is concave upward which suggests that this anion inhibits chloride movement.
(18) (3) A row of regularly spaced ribosomes located in the concavity, but at some distance from the arciform filament.
(19) The authors also consider a problem of how to interpret the symptom of a "snake mouth" or a "concave lens" which (depending on its cause) can be either transient (in a large concrement) or stable (in an exophytic tumor, completely occluding the duct).
(20) In both maxillary and mandibular teeth, approximal concavities often started in enamel, extending down to the root surface.
Distend
Definition:
(v. t.) To extend in some one direction; to lengthen out; to stretch.
(v. t.) To stretch out or extend in all directions; to dilate; to enlarge, as by elasticity of parts; to inflate so as to produce tension; to cause to swell; as, to distend a bladder, the stomach, etc.
(v. i.) To become expanded or inflated; to swell.
Example Sentences:
(1) The combination of an over-distended uterus caused by a multiple-fetus pregnancy with therapeutic bed-rest may cause mechanical ileus.
(2) The epididymis appeared distended but without any visible sperms.
(3) In a noncontracting in vitro preparation of combined right and left atria we demonstrated by electron microscopy that, at 37 degrees C, transition from zero pressure to a physiological distending pressure of 5.1 mm Hg rapidly rendered atrial endocardial endothelium permeable to the macromolecular probes horseradish peroxidase (HRP; M(r), approximately 40,000) and wheat germ agglutinin-HRP (M(r), approximately 70,000); each probe was introduced at the atrial cavitary endocardial surface.
(4) However, separation of the capsule from the bony glenoid can be detected if a joint effusion is present to adequately distend the joint.
(5) The surgical treatment was ligation of the distended vein immediately distal to the fistula in the hand, and fistula function was preserved.
(6) Eight 'normal' gallbladders and six distended gallbladders from patients with carcinomatous obstruction of the common bile duct were examined.
(7) Immediately after the perforation, the patient entered into vascular collapse and respiratory distress, with a distended abdomen.
(8) As the mosquito ingests blood, sensory information from the distending abdomen reaches the mid gut via the nerve cord, brain and stomatogastric system.
(9) Chains of low-amplitude contractions (repeated small deviations from base line) were detected before parturition was induced, and these were more common at distended parts of the uterus.
(10) The rate of acquisition increased as a function of the distending pressure.
(11) Contracted and distended bladders incubated in 0.01 M sodium bicarbonate were compared to identical preparations experimentally incubated in 5 mM thioglycolic acid.
(12) Amplitude, duration and magnitude (as measured by planimetry) of anal relaxation elicited by rectal distensions were related to rectal distending volume (P less than 0.001).
(13) The periosteal fibroblasts of OI35 contained grossly distended rough endoplasmic reticulum consistent with the 53% reduction in collagen secretion by cultured dermal fibroblasts.
(14) Many virus particles were observed within distended cisternae of the endoplasmic reticulum 22 h p.i., and matrices of viroplasm were found close to developing virus particles.
(15) In orbital surgery, distended and thinned extraocular muscles were precisely localized and preserved anatomically and functionally.
(16) An enlarged cervical lymph node contained many abnormal plasma cells, which were distended with immunoglobulin; this material appeared to be released into lymph spaces when the cells burst.
(17) Among 52 unit discharges observed, 36 (69.2%) showed that electro-acupuncturing "Zusanli" point abolished the inhibitory reaction induced by distending stomach.
(18) (n = 18) in the presence of a distended bladder and 7.0 cm.
(19) The pathogenesis involves the release of kinins, the triggering of neurogen reflex mechanisms by distending the jejunum, the massive flow of fluid in jejunal lumen, the loss of the reservoir function of the stomach, and, possibly, the pathologic release of gastrointestinal hormones.
(20) A controlled study is in progress to delineate the optimum distending airway pressures at specific inspired oxygen concentrations in order to reduce the incidence of alveolar rupture to a minimum.