atretic 

  1. 形容詞
閉鎖的, 不通的

    
                        
    2. 
                                            

                

            

            
            

                

                
例句

                

                    
    
                                                    
  1. 
                                or tiny & malformed (microtia) b. Low set c. Posteriorly rotated d. Protruding or cup ear (defect in posterior auricular muscle) e. Lop ear (defect in superior auricular muscle) d. Crumpled ear (intrinsic ear muscles), over folded helix e. Pits, grooves or creases on back of the helix f. Absence of the superior or inferior crus g. Large tragus or antitragus, especially if the size or position is asymmetrical h. Preauricular pits, tags, fistulae i. Narrow or atretic auditory canal Normal Variants: a. Attached lobe (~20% Caucasians) b. Darwinian tubercle Gray Areas/ Pit falls: a. The most critical step in assessing the position and rotation of the ear is holding the head in a true vertical position.                            
    2.