43.下列肌肉群中,何者之病變最不可能造成犬會陰赫尼亞?
(A)外肛門括約肌(external anal sphincter)
(B)尾肌(coccygeus muscle)
(C)外閉鎖肌(external obturator muscle)
(D)提肛肌(levator ani muscle)
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統計: A(209), B(325), C(506), D(58), E(0) #853566
統計: A(209), B(325), C(506), D(58), E(0) #853566