| 词汇 | superior-vena-cava |
| 语种 | 英语、汉语、英汉翻译、汉英翻译 |
| 释义 | superior vena cava noun[ Cusually singular ] anatomy specializeduk /suːˌpɪə.ri.ə ˌviː.nə ˈkeɪ.və/ us /səˌpɪr.i.ɚ ˌviː.nə ˈkeɪ.və/pluralsuperior venae cavaeuk /suːˌpɪə.ri.ə ˌviː.niː ˈkeɪ.viː/ us /səˌpɪr.i.ɚ ˌviː.niː ˈkeɪ.viː/(alsoprecava, uk /priːˈkeɪ.və/ us /priːˈkeɪ.və/pluralprecavaeuk /priːˈkeɪ.viː/ us /priːˈkeɪ.viː/) a large vein through which blood returns to the heart from the head and all parts of the body above the chest: The symptoms are caused by the impairment of blood flow through the superior vena cava to the right atrium. A CT scan of the patient's chest showed that her superior vena cava was entirely closed. The precava returns the blood from the upper half of the body. The pacemaker wires are often placed inside the superior vena cava and then guided inside the heart. This sign appears in tuberculosis and obstruction of the superior vena cava. The blood from the top part of the body drains into the superior vena cava down to the right atrium. The circulatory system & blood ABO accessory pathway adventitia adventitial ANA auricle bicuspid valve femoral artery gamma globulin glomus granulocyte haematogenous haemic phagocyte portal system precava pulmonary artery pulmonary vein pulmonic tricuspid valve Related wordvena cava Compareinferior vena cava |
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