(n.) A spheroidal body growing from a plant either above or below the ground (usually below), which is strictly a bud, consisting of a cluster of partially developed leaves, and producing, as it grows, a stem above, and roots below, as in the onion, tulip, etc. It differs from a corm in not being solid.
(n.) A name given to some parts that resemble in shape certain bulbous roots; as, the bulb of the aorta.
(n.) An expansion or protuberance on a stem or tube, as the bulb of a thermometer, which may be of any form, as spherical, cylindrical, curved, etc.
(v. i.) To take the shape of a bulb; to swell.
Example Sentences:
(1) Four cases of benign lymphoid hyperplasia (BLH) of the duodenal bulb are reported.
(2) White hair bulbs which demonstrated no TH activity formed 2SCD, but not 5SCD.
(3) The fact that it is still used is regrettable yet unavoidable at present, but the average quantity is three times less than the mercury released into the atmosphere by burning the extra coal need to power equivalent incandescent bulbs.
(4) Utilizing the bilateral comparison technique in 30 hospitalized patients with chronic stable plaque-type psoriasis vulgaris, we closely monitored the clinical responses to ultraviolet radiation (Westinghouse fluorescent FS40 bulbs, 290--400 nm) and a variety of tar preparations and lubricant vehicles in combination and separately.
(5) Dioptric aniseikonia was calculated between 1 month and 24 months after surgery (with Gruber's and Huber's computer program) on the basis of most recently obtained values (bulb axis length, depth of the anterior chamber, lens thickness, necessary refraction), and compared with subjective measurements taken with the phase difference haploscope.
(6) This observation provides corroboration for the identification of the principal CCK-I neuron in the rat olfactory bulb as the centrally projecting middle tufted cell.
(7) One PCR product hybridized to a 4.0 kb RNA concentrated in subpopulations of putative glutamatergic neurons including mitral cells of the olfactory bulb, pyramidal cells of layer V of the cerebral cortex, pyramidal cells of the piriform cortex, and pyramidal cells of field CA3 of the hippocampus.
(8) Glomus body tumors most frequently originate in the middle ear (tympanicum) or on the jugular bulb (jugulare).
(9) Two normal variants that could be confused with abnormalities were noted: (a) the featureless appearance of the duodenal bulb may be mistaken for extravasation, and (b) contrastmaterial filling of the proximal jejunal loop at an end-to-end anastomosis with retained invaginated pancreas may be mistaken for intussusception.
(10) Olfactory bulbs are relatively smaller in felids than in canids or viverrids.
(11) Harvest the bulbs once they reach 7-8cm across; if you cut them off at ground level rather than pulling the whole plant up, the roots should produce a second crop of feathery shoots.
(12) The lighting regimen was 14 h light: 10 h dark, supplied by natural diffused sunlight and incandescent bulbs.
(13) Endoscopic evaluation of the stomach and duodenum was performed, with separate registration of the duodenum distally to the duodenal bulb.
(14) The staining of HRP-immunopositive cell bodies indicates that the pallial regions studied receive afferent projections from the main olfactory bulb and are reciprocally interconnected by intrapallial associative fiber systems.
(15) The cardiac glycoside ouabain was injected into the eye-bulb of the teleost fish, Carassius carassius.
(16) The results also indicate that the two parts of the teleost olfactory bulb are differentiated not only functionally but also morphologically.
(17) The rhythmic waves induced by these ions were recorded in the olfactory bulb.
(18) In oestrogen-treated preparations, tuberoinfundibular arcuate neurons responsive and unresponsive to accessory bulb stimulation could be distinguished by the frequency of successful antidromic propagation into the soma.
(19) The volumetric determination of all those tissues relevant for Opthalmodynamography (ODG) showed the lids to contribute about a quarter to the total volume; another quarter each was due to the optic bulb including optic fascicel, external bulbar musculature and orbital fat.
(20) Early resection of carotid body tumors, before involvement of the internal carotid artery and carotid bulb, is advocated.
Medulla
Definition:
(n.) Marrow; pith; hence, essence.
(n.) The marrow of bones; the deep or inner portion of an organ or part; as, the medulla, or medullary substance, of the kidney; specifically, the medula oblongata.
(n.) A soft tissue, occupying the center of the stem or branch of a plant; pith.
Example Sentences:
(1) Furthermore, the local interneurons make extensive efferent synaptic connections with unidentified neurons in the terminal medulla.
(2) These findings suggest that AAT participates in the synthesis of transmitter aspartate in the medulla oblongata of the rat.
(3) These included the noradrenergic, TH- and DBH-immunoreactive cell groups of the pons and medulla.
(4) Size of both areas gradually decreased as the medulla filled with plasma cells, 7-30 days after injection.
(5) Obvious restitution of the thymic medulla was evident about 14 days after withdrawal of FK506.
(6) + inf., pons + medulla), rCBF increased toward the control level gradually, and it completely recovered 60 min after recirculation.
(7) It is well established that the renal medulla exerts a potent endocrine-like antihypertensive action.
(8) It was found that within the dorsal part of the well known pressor area there is a narrow strip, 2.5 mm lateral from the mid line, starting ventral to the inferior colliculus and ending in the medulla close to the floor of the IV ventricle, from which vasodilatation in skeletal muscles is selectively obtained.
(9) Urea decreased and valine increased in the TD medulla-pons.
(10) The sizes of adrenaline (A) and noradrenaline (N) cells in the adrenal medulla of nonoperated (NO), sham-operated (SPX), and pinealectomized (PX) male rats (n = 126) were investigated by quantitative light microscopy.
(11) Injection of horseradish peroxidase into the rostral ventrolateral medulla (RVLM) led to heavy retrograde and anterograde labeling in the region of the hypothalamus that yielded the CRDR when stimulated electrically.
(12) The object of these studies was to investigate whether destruction of the renal medulla in normal rats would alter vascular capacitance.
(13) The presence in lamprey kidney of a loop which is similar to Henle's loop in mammals and birds indicates that the development of the system of osmotic concentration conditioned by the formation in the kidney of the medulla and from a sharp increase in renal arterial blood supply.
(14) Our results suggest that multiple receptors and signal transduction pathways are involved in the regulation of the tyrosine hydroxylase gene in the rat adrenal medulla.
(15) In hypertensive rats (SHR) the density of alpha 2-adrenoceptors was reduced in the cerebral cortex, hypothalamus and medulla oblongata (20-27%), as was the dose-pupillary response curve for clonidine (1.8-fold).
(16) An antihypertensive function in systemic blood pressure control has been attributed to the renal medulla.
(17) 1 After the injection of labelled procaine and lidocaine in mice, the location and concentration of radioactivity was demonstrated by autoradiographical methods.2 An accumulation in some endocrine cells such as the pancreatic islets, the hypophysis, the adrenal medulla and certain cells of the thyroid (probably representing the calcitonin-producing parafollicular cells) was shown.3 After the injection of [(14)C]-procaine in chicks, an accumulation of radioactivity was observed in the ultimobranchial gland (which produces calcitonin in birds), but not in the thyroid.4 Radioactivity was also shown to be strongly concentrated in structures containing melanin, such as the pigment of the eye, skin and hair and in some organs involved in the metabolism and excretion of these drugs.
(18) Histologically, increased amounts of fibrotic tissue in the medulla and the cortex were found together with tubular atrophy.
(19) Two well-defined zones are observed both in the medulla and in the cortex.
(20) One infant had a unilateral infarction in the medulla and another showed extensive gliosis in the brainstem tegmentum along with a large infarction in the region of the anterior cerebral artery.