| 释义 |
DictionarySeeorificeleft atrioventricular orifice
orifice [or´ĭ-fis] 1. the entrance or outlet of any body cavity.2. any opening" >opening or meatus" >meatus. adj., adj orific´ial.aortic orifice the opening of the left ventricle into the aorta; called also aortic opening.external urethral orifice urinary meatus.internal urethral orifice the opening from the urinary bladder into the urethra at one corner of the trigone of the bladder.left atrioventricular orifice (mitral orifice) the opening between the left atrium and ventricle of the heart.pulmonary orifice (orifice of pulmonary trunk) the opening between the trunk" >pulmonary trunk and the right ventricle of the heart; called also opening of pulmonary trunk.right atrioventricular orifice (tricuspid orifice) the opening between the right atrium and ventricle of the heart.ureteral orifice the opening of a ureter into the urinary bladder at one corner of the trigone of the bladder. Called also ureteral meatus.left atrioventricular orifice [TA] an atrioventricular opening that leads from the left atrium into the left ventricle of the heart. Synonym(s): ostium atrioventriculare sinistrum [TA], mitral orifice, ostium arteriosum |