| 词汇 | myocardium |
| 释义 | myocardium noun[ U ] anatomy specializeduk /ˌmaɪ.əˈkɑː.di.əm/ us /ˌmaɪ.əˈkɑːr.di.əm/ the muscle that forms the walls of the heart: 心肌 The myocardium contracts as the heart beats.心跳时心肌收缩。 Substances & structures in the body abductor accessorius ACL actin adductor fundus funiculus fusiform glomerular glomerulus navicular neuroendocrine neurohormonal neurohormone nociceptive tendinous tendinum tendo tensor Th You can also find related words, phrases, and synonyms in the topics: The circulatory system & blood Examples of myocardiummyocardium The funnel consisted of myocardium that formed a continuity between the right wall of the atrioventricular canal and the ventricular septum. The myocardium of the rudimentary right ventricle is separated by the atrioventricular groove from the muscular floor of the blind-ending right atrium. As discussed above, the immature contractile apparatus of the fetal myocardium does not tolerate increased afterload. In the heart, tissue cysts were in the pericardium, myocardium, endocardium and in the mitral valves. Many large tortuous vessels with continuous flow patterns, which were thought to be collaterals were seen throughout the myocardium. The wall of this chamber had viable myocardium and communicated with the main body of the left ventricle through a large fibrous orifice. The glucose-based cardioplegic solutions have been used clinically with protective effects on adult myocardium at concentrations ranging from 2.5 to 5.0% glucose. Macroscopically visible myocardium may be confined to the base of the heart in the region of the tricuspid orifice. Early treatment leads to the preservation of ischaemic myocardium, reduction of infarct size and maintenance of cardiac function. The ventricular conduction tissues then extend on the septal surfaces as insulated subendocardial tracts before ramifying into the ventricular myocardium at the apexes. Apart from these changes in specific focuses, large areas of the myocardium can be normal. While it commonly involves many organs, direct involvement of the myocardium is rare. Other fetal organs can be involved such as the fetal heart (cardiomegaly with a thick myocardium which may contain punctuate calcifications) or the fetal lung. Abnormalities of the coronary circulation were not apparent grossly in the specimens with hypertrophied right ventricular myocardium and imperforate pulmonary valves. Histological examination of the resected aneurysm revealed myocardium which was almost totally replaced by dense fibrous tissue and numerous caseating granulomata. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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