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HANDBOOK OF ANATOMY 



Several other muscles are used in acts of extraordinary or 

 forced inspiration, namely : 



Quadratus lumborum. 

 Pectorales major and minor. 

 Serratus magnus. 

 Latissimus dorsi. 

 Sterno-mastoid . 

 ^Extensors of the back. 



The Deep Fascia of the trunk forms a complete investment 

 for all the muscles. In the upper part of the body it is similar 

 to the deep fascia of the limbs, forming an outside covering, and 

 sending in septa between the muscles ; but in the lumbar and 

 abdominal regions it is rather more complicated. 



