452 



ANATOMY IN A NUTSHELL. 



Left Side. — (1) Left lumbar veins. (2) Left semilunar ganglion. 



The branches of the abdominal aorta are (1) parietal branches and under 

 this we have (A) phrenic branches which are two in number and as a rule 

 arise close together on the under surface of the Diaphragm, but they present 



PLATE CCXLI. 



A-0CCIP1T0 FRONTALIS. 



B-TRAPEZIUS. 



C-STERNO- MASTOID 



D-SPLENIUS 



E-COMPLEXU! 



F-0BL'Q5.SUR 



G - RECTU S 



CAPITUS 



POST. Ml 

 H-NECTUS 



CAPIT 



POST.MIN. 

 I - RECTU5- 



CAP.LAT. 



J-FEC-CAB/I 



K-RECCftP.AJfT.MJ. 



L-SURCONSTRICTO 



M- POST. CONDYLOID 

 FORAMEN. 



N- ANT. CONDYLOID FORAMEN. 



0- SUP. CURVED OR NUCHAL LINE. 



P- LINEA SUPREMA. 



Q- INF. CURVED LINE. 



R-FOR LIGAMENTUM 

 NUCHAL. 



^■% S - INION OR EXT. 

 %a OCCIPITAL 

 ^ .„ PROTUB- 

 ERANCE. 

 T- CREST. 



U-BAS- 

 & ILAR 

 PROC 



V- PHAR- 

 YNGEAL 

 SPINE. 



-TUBERCLES 



FOR CHECK 



LIGAMENTS 



X- JUGULAR PROC. 

 Y- CONDYLES. ART.WITH ATVS. 



External Surface of Occipital Bone. 



much variation in their origin since they may come by a common trunk or one 

 may come from the comae axis and the other from the renal artery. The one 

 on the righl side passes across the crura of the Diaphragm to the under surface 

 of that muscle behind the inferior vena cava, while the one on the left side passes 

 behind the oesophagus to the under surface of the Diaphragm. (B) Ltjmbab 

 arteries are five pairs and arise from the back of the aorta to pass outward 

 on the body of the vertebrae beneath the Psoas magnus muscle and the sympathe- 

 tic nerve. The first two pairs pass under the crura of the Diaphragm and the 

 right one also passes under the inferior vena cava. Near the transverse pro- 

 cesses of the vertebrae they divide into an abdominal branch, which passes 

 outward beneath the Quadratus lumborum to end between the muscles of the 

 abdominal wall where they anastomose with the deep epigastric, the internal 

 mammary, the ilio-lumbar, and the circumflex iliac arteries. It is well to say 



