111! MUSCLES 01 IH1 



partly tendinous, and their digitati tly variable. Tl 



series are ted into the per lun 



f the tl 

 tra: er lumbar vertebrae an< 



the- and the tub I the internal i: 



tra i and their 



hoi 



I . i , and 24. 



is the- dirt' i the 1< rsi. It aria - from the the 



upperthoi ted immediately internal to the ilk>< 



the tra: the up] I middl 



;i,and 2421 is the only porti 

 which 1 the head. It is situated internal to th< 



hieh ntly united, and arises b> ite short tendinous slips of variable 



from the trans and articular pn the middle and lower 1 I vertebrae and fr 



the tra: : the upper thoracic vertebra-. This muscle often | 



ription, is inserted by a short tendon into the posterior margin of the mas 

 apletel) aled by the splenius capitis. The il talis and longis 



longissimus capitis are situated beneath (in front of the two splenii. 

 ■ spinalis 1 9 and 241 : the spinalis 



which the i alone is an independent and nt muscle, th< 



inconstant and the spinalis capiti rt of the semispinalis capiti 



The spin I and 241 I is intimately conn 1 the t< 



which come from the spinous pn the lun 



partly from these bony point.-. ! ted al< 



vert numerous tendinous fasciculi. 1 



i the ■ and of the lower thoracic vertebras and | 



middle and upper tl vertebrae, bridgii 



the ninth or the ninth and ten - 



The spin and, when | 



mentar;.. [| is a very -Under muscle which . From th 



seventh cervical vertebrae and inserts into I of 



the third cervical verl 



i upper thor 



bed 



The Second Layer. The Transversospinalis. 



The fibers oi this layer 1 . from the trans - to the spinous 



process sent in their arrangement a portion oi th( al trunk musculature which has 



* This muscle has also 1 the com pi - old. 



