ostium

ostium, pl. ostia (os´te-um, -a) [NA]

A small opening, especially one of entrance into a hollow organ or canal. [L. door, entrance, mouth]
o. abdomina´le tu´bae uteri´nae [NA] abdominal o. of uterine tube
abdominal o. of uterine tube the fimbriated or ovarian extremity of an oviduct.o. abdominale tubae uterinae [NA];
o. aor´tae [NA] aortic orifice
aortic o. aortic orifice
o. appen´dicis vermifor´mis [NA] o. of vermiform appendix
o. arterio´sum mitral orifice
o. atrioventricula´re dex´trum [NA] tricuspid orifice
o. atrioventricula´re sinis´trum [NA] mitral orifice
o. cardi´acum [NA] cardiac orifice
o. ileoceca´le [NA] ileocecal orifice
o. inter´num uterine o. of uterine tubes
o. pharyn´geum tu´bae auditi´vae [NA] pharyngeal opening of auditory tube
o. pri´mum interatrial foramen primum
o. pylor´icum [NA] pyloric orifice
o. secun´dum interatrial foramen secundum
o. trun´ci pulmona´lis [NA] opening of pulmonary trunk
o. tympan´icum tu´bae auditi´vae [NA] tympanic opening of auditory tube
o. ure´teris [NA] ureteric orifice
o. ure´thrae exter´num [NA] external urethral orifice
o. ure´thrae inter´num [NA] internal urethral orifice
o. u´teri [NA] external os of uterus
o. u´teri exter´num external os of uterus
o. u´teri inter´num isthmus of uterus
uterine o. of uterine tubes the uterine opening of the oviduct.o. uterinum tubae [NA], o. internum, uterine opening of uterine tubes;
o. uteri´num tu´bae [NA] uterine o. of uterine tubes
o. vagi´nae [NA] vaginal orifice
o. ve´nae ca´vae inferio´ris [NA] opening of inferior vena cava
o. ve´nae ca´vae superio´ris [NA] opening of superior vena cava
os´tia vena´rum pulmona´lium [NA] openings of pulmonary veins, under opening
o. veno´sum cordis tricuspid orifice
o. of vermiform appendix the opening of the vermiform appendix into the lumen of the cecum.o. appendicis vermiformis [NA];

 

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