左冠状动脉

左冠状动脉(arteria coronaria sinistra,LCA)是发自左主动脉窦主动脉瓣英语aortic valve左瓣上方)的一条冠状动脉,较右冠状动脉短粗,为主动脉的一条分支。经肺动脉起始部和左心耳之间,沿冠状沟向左前方走行后,分为回旋支(circumflex branch)和前降支(anterior descending branch)。分支之前被称为左主干(left main coronary artery,LMCA)。

左冠状动脉
Heart viewed from above, atria removed, base of ventricles exposed. Left coronary artery visible at left.
Heart viewed from the front. Coronary arteries (labeled in red text) and other major landmarks (in blue text). Left coronary artery is at upper right in the image.
基本信息
来源升主动脉
分支左前降支动脉
左回旋支动脉英语Circumflex branch of left coronary artery
(中间支)
标识字符
拉丁文arteria coronaria sinistra
TA98A12.2.03.201
TA24142
FMAFMA:50040
格雷氏p.547
解剖学术语

左冠状动脉主要提供左心室前壁、侧壁和室间隔等部位的心肌供血。

分支

左冠状动脉约在距根部10 to 25 mm 会岔分为前室间动脉(又称左前降支动脉)以及左回旋支动脉英语left circumflex artery(简称LCx)。在某些个案可能会多出一条分支,多出来的分支称为中间支(ramus intermedius)[1]

左冠状动脉至分岔前称为左总冠状动脉(Left main artery,简称LM),“左冠状动脉”这个字有时单纯指左总冠状动脉,有时则包含其所有终末分支。

在有些人身上可能可以看到“第一膈膜支”(first septal branch)[2]

附加图像

参见

参考文献

  1. ^ Fuster, V; Alexander RW; O'Rourke RA. Hurst's The Heart 10th. McGraw-Hill. 2001: 53. ISBN 0-07-135694-0. 
  2. ^ Verna E, Santarone M, Boscarini M, Ghezzi I, Repetto S. Unusual origin and course of the first septal branch of the left coronary artery: angiographic recognition. Cardiovasc Intervent Radiol. June 1988, 11 (3): 146–9 [2016-09-15]. PMID 3139296. doi:10.1007/BF02577106. (原始内容存档于2020-04-15). 

3. Rohan Pravinbhai Parikh, Amey Beedkar, Mahendra Maske, Bhavesh Talaviya, Sunil Washimkar, Pradeep Deshmukh, Mukund Deshpande. International Journal of Biomedical and Advance Research. 2016; 7(6): 298-299. http://ssjournals.com/index.php/ijbar/article/view/3370/2363页面存档备份,存于互联网档案馆

外部链接