| ampullary limbs of saemicircular ducts | The dilated ends of the three saemicircular ducts, each of which contains a specialised thickening of the epithelium known as the ampullary crest. Synonym: crura membranacea ampullaria ductus saemicircularis, ampullary limbs of saemicircular ducts. (05 Mar 2000) |
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| ampullary sulcus | The groove on the external surface of the ampulla of each saemicircular duct where the nerve enters the crista ampullaris. Synonym: sulcus ampullaris. (05 Mar 2000) |
| ampullitis | Inflammation of any ampulla, especially of the dilated extremity of the vas deferens or of the ampulla of Vater. Origin: ampulla + G. Itis, inflammation (05 Mar 2000) |
| ampullula | A circumscribed dilation of any minute lymphatic or blood vessel or duct. Origin: Mod. L. Dim. Of L. Ampulla (05 Mar 2000) |