Chap. 12.] 'Epigaftric Region, &V. 163 



The anterior part of the abdomen is diftingirilhed 

 into feveral divifions, called regions, i. The epi- 

 gaftric region, which reaches from the pit of the fto- 

 mach to within three fingers breadth of the navel, and 

 is bounded laterally by the hypocondria. 2. The 

 umbilical region, which extends three fingers breadth 

 above and below the navel, and is terminated laterally 

 by the lumbar regions j and 3. Below the umbilical 

 region is the hypogaftric, on each fide of which are the 

 iliac regions. Still lower down is the region of the 

 pubis. 



Within the cavity of the abdomen are fituated four 

 pair of mufcles. The pfoas magnus arifes from the 

 fide of the body and tranfverfe procefs of the loweft 

 Vertebra of the back, and from thofe of all the ver- 

 tebrae of the loins. Pafiing downwards through the 

 pelvis it is inferted partly into the lefTer trochanter, and 

 partly into that part t>f the os femoris a little below it. 

 It railes the thigh forwards, or when the thigh is fixed, 

 as in the pofture of {landing, it bends the trunk for- 

 wards on the offa femoris. The pfoas parvus proceeds 

 from the two upper vertebras of the loins, and fending 

 fF a fmall long tendon, is inferted into the brim of the 

 pelvis at the junction of the os ileum and pubis. It 

 aflifts the pfoas magnus in bending the loins forwards* 

 The iliacus internus arifes from the tranfverfe pro- 

 cefs of the laft vertebra of the loins, from the inner 

 edge of the fpine of the ileum, from the edge of that 

 bone between its anterior fpinous procefs and the 

 acetabulum, and from moft of the hollow, part of the 

 ileum. It joins with the pfoas magnus, where it be- 

 comes tendinous, is inferted along with it into the 

 fmaller trochanter, and has the fame effect. 



The quadratus lumborum is feated further back- 

 j it arifes from the pofterior part of the fpine of 

 M 2 th$ 



