MUSCLES ARTERIES. 2p 



InfracostaleS : inferior surface of one rib internal surface 

 ist, 2d or 3d lib below. [Intercostal.] 



Tr.angula'r.S Ster'ni! side of gladi'olus, internal surface ensi- 

 form appendix, cartilage of 3 or 4 lower true ribs cartilages 

 of 2d, 3d, 4th, sth ribs. [Intercostal.] 



Levato'res COSta'nna: (12) transverse processes dorsal verte- 

 brae superior border rib below, near angle. [Intercostal.] 



(9) DIAPHRAGMATIC REGION I. 



Diaphrag'ma : internal surfaces 6 or 7 lower ribs, ligamenta 

 arcuata, crurcs from 2d, 3d, 4th lumbar vertebrae, ensiform 

 cartilage converge forming common central tendon. Aortic 

 opening for aorta, vena azygos major, thoracic duct ; cesojt'ha.- 

 geal> oesophagus and pneumogastric nerves; vena cava. 

 for inferior vena cava; right crus transmits sympathetic and 

 greater and lesser splanchnics; left crus, vena azygos minor 

 and splanchnics. [Phrenic.] 



(lo) PERINAEAL REGION 8. 



SpMnc'ter a'ni : tip of coccyx and fascia in front common 

 central perinaeal tendon. [Hemorrhoidal br:m<_h 4th sacral.] 



Sphinc'ter inter'nUS : muscular ring (Y 2 inch wide), i inch 

 from anus, surrounding rectum. 



Accelerator uri'ns I central perineal tendon and raphe 

 covers bulb corpus cavernosum, and spongiosum, and dorsal 

 vessels. 



Erec'tor pe'niS : internal surface tuber ischii sides and in- 

 ferior surface crus. 



Transversal: perins'i: internal surface ascending ischic ramus 

 obliquely for- and inwards to central perinaeal tendon. 



Lsva'tOf a'ai: inside of pubic ramus and body, ischic spine, 

 fascia ^an^le of division into obturator and vesical) central 

 perinaeal tendon, rectum, coccyx ; forms floor of pelvic cnvity. 



Compres'SCT ure'tlirsi pubic ramus surrounds membranous 

 portion. 



COGCygS'us: ischic spine and lesser sacro-sciatic ligament 

 side of coccyx and last sacral segment. 



(In the female the above perinaeal muscles are essentially 

 the same ; the erec'tor clitori'dis takes the place of erector 

 penis, being inserted into the sides of the ciitoris; sphincter 

 vagi'nce represents the accelerator urinae ol the male, 

 surrounding the vagina.) 



ARTERIES. 



AECH OP AQKTA: (5 branches); from left? ventricle, oppo- 

 site middle of sternum, upwards for 2 inches, arching back* 



