140 ANATOMY IN A NUTSHELL. 



Action. Adducts thigh. 



Nerve Supply. — Anterior crural, obturator accessory, and occasionally a 

 branch from the obturator. 



Blood Supply.— Femoral and obturator arteries. 



Adductor Longus — Description.— ( Plates LXIV-LXVIII-LXXI-LXXIV) 

 —This muscle forms the inner boundary of Scarpa's triangle and is the most 

 superficial one of the Adductors. It lies on the same plane as the Pectineus. 

 It is a flat, triangular muscle. 



Origin. — (Plate XL111.) — Front of OS pubis, at junction of crest with 

 symphysis. 



Insertion. — (Plate XLVIII.) — By aponeurosis into linea aspera. 



Action. Adducts thigh powerfully. 



\'i w\ r. Supply. — Obturator. 



Blood Supply. — Obturator and perforating branches of profunda. 



Adductor brevis. 1 Ascription.— (Plates LXIV-LXVIII-LXXI-LXXIV.) 



The Adductor brevis, which is somewhat triangular, is situated immediately 



beneath the Adductor longus and the Pectineus. The second and sometimes 



the first perforating branches of the profunda femoris artery pierces this muscle 



near it- insertion. 



Origin. — (Plate XLIII.) — Outer surface of body and descending ramus 

 of os pubis, between Gracilis and Obturator extern us. 



Insertion. — (Plate XLVIII.) — By an aponeurosis into lower part of line 

 Leading from the lesser trochanter to the linea aspera and the upper part of the 

 same line, immediately behind the Pectineus and upper part of the Adductor 

 longus. 



A( tion. Assists in flexing thigh upon pelvis; also in drawing leg forward 

 in walking. 



\ki;\ i: Supply. — Third and fourth lumbar through the obturator. 



Blood Supply. — Obturator and perforating branches of the profunda. 



LESSON XXXVII. 



Adductor magnus.— Description.— (Plates LXIV-LXVIII-LXXI-LXXIV.) 

 —The muscles of the Anterior Femoral Region are separated from the remain- 

 ing muscles of the Internal Femoral Region by the Adductor magnus. 

 Along the attachment of this muscle there are three and sometimes four open- 

 Lngs Formed by tendinous arches attached to the femur for the passage of the 

 three perforating branches of the profunda artery. The fourth one, when pres- 

 ent, is for the terminal branch of the profunda. 



Origin. — (Plate XLIII.) — (1) Descending ramus of os pubis; (2) ascend- 

 ing ramus of ischium ;(3) outer margin of under surface of tuberosity of ischium. 

 [nseri con. | Plate XLVIII.) — The fibers from the ramus of the os pubis 

 are vi'vy short, horizontal in direction, and are inserted into the rough line lead- 

 ing from the greal trochanter to the linea aspera,internal to the Gluteus max- 

 Lmus; those from the ramus of the ischium are directed downward and outward 

 to be inserted by mean- of a broad aponeurosis into the linea aspera and the 



