THE MUSCULAR SYSTEM 



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system, the ventral abductors and the flexors to the ventral. 

 Aside from these there is found a series of intertransversarii 

 caudce, presumably belonging to the dorsal system as in the 

 case of the lumbar muscles of the same name. 



FIG. 56. Human caudal muscles. [After LARTSCHNEIDER.] 



(A) Ventral. (B) Dorsal. 



pir, piriformis; acv, abductor caudae ventralis; acd, abductor caudae dorsalis; eel, 

 extensor caudae lateralis; sea, sacrococcygeus anterior (^rflexor caudae). The lumbar 

 vertebrae are designated by Roman numerals, the coccygeal by Arabic. 



