《心臟血管系統(tǒng)》ppt課件-文庫(kù)吧
2024-12-21 09:34 本頁(yè)面
【正文】 脈口－ returns blood to the heart from the upper half of the body ? Orifice of inferior vena cava 下腔靜脈口 － returns blood to the heart from the lower half of the body ? Orifice of coronar sinus 冠狀竇口 － returns blood to the heart from the cardiac muscle One outle － right atrioventricular orifice 右房室口 ? Crista terminalis界嵴 － vertical ridge thatjfrom superior vena cave to inferior vena cave ? Sulcus terminalis 界溝 － groove on exterior of heart that corresponds to crista terminalis Two parts－ separated externally by sulcus terminalis and internally by the crista terminalis ? Atrium proper 固有心房 ? In front of the ridge ? Pectinate muscles in wall ? Right auricle 右心耳 － a small conical muscular pouch, projects to the left from the root of superior vena cava, pectinate muscles in wall ? Sinus venarum cavarum 腔靜脈竇 ? Lies posterior to the ridge ? Smooth walls ? Fossa ovalis 卵圓窩 － an oval depression, a remnant of the fetal foramen ovale, on the lower part of interatrial septum, the most mon location of atrial septal defects (ASD) ? Limbus fossae ovalis 卵圓窩緣 – prominent margin of fossa ovalis ? Torus aortious 主動(dòng)脈隆凸 Right ventricle (RV) 右心室 Receives deoxygenated blood from right atrium through right atrioventricular orifice ? One inlet－ right artrioventricular orifice 右房室口 ? One outlet－ orifice of pulmonary trunk 肺動(dòng)脈口 ? Two parts－ divided by the supraventricular crest 室上嵴 , a muscular ridge between right atrioventricular orifice and orifice of pulmonary trunk Inflow tract－ rough walls ? Trabeculae carneae肉柱 － irregularly arranged bundles of myocardium ? Septomarginal trabecula 隔緣肉柱 － extends from interventricular septum to base of anterior papillary muscle, contains right bundle branch ? Papillary muscles乳頭肌 －conicalshaped , anterior, posterior and septal Out flow tract ? Conus arteriosus 動(dòng)脈圓錐 coneshaped, smooth area leading upward to orifice of pulmonary trunk ? Pumps blood through pulmonary orifice to pulmonary trunk Left atrium (LA) 左心房 ? Left auricle左心耳 － projecting to the right, pectinate muscles in wall ? Four inlets－ four orifices of pulmonary veins 肺靜脈口 open through the posterior wall ? One outlet－ left atrioventricular orifice左房室口 , blood leaves through left atrioventricular orifice to left ventricle Left ventricle (LV) 左心室 ? Has wall three times thicker than that of right ventricle ? One inlet－ left atrioventricular orifice 左房室口 ? One outlet－ aortic orifice 主動(dòng)脈口 ? Two parts－ divided by anterior cusps of mitral valve ? Inflow tract－ rough walls ? Outflow tract – aortic vestibule 主動(dòng)脈前庭 , smooth area leading to aortic orifice Valves Tricuspid valve 三尖瓣 ? Guards right atrioventricular orifice ? Three triangular cusps: anterior, posterior and septal, the base of cusps are attached to fibrous ring surrounding the atrioventricular orifice ? Chordae tendineae 腱索 － fine, white, connective tissue cords, attach margin of cusps to papillary muscles 乳頭肌 Mitral valve 二尖瓣 ? Guards left atrioventricular orifice ? Two triangular cusps－anter
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