78 ANATOMY AND PHYSIOLOGY. 



into the upper part of the linea aspera of the femur. Use To 

 bend the thigh. 



f Jidductor longus femoris arises from the upper and fore part 

 of the pubis. Inserted into the middle and back of the linea 

 aspera. Use To bend the thigh. 



Jidductor brevis femoris arises from the fore part and ramus 

 of the os pubis. Inserted into the inner and upper part of the 

 linea aspera. Use To bend the thigh, and move it inwards. 

 Adductor magnus femoris arises from the lower and fore part 

 of the ramus of the pubis. Inserted into the whole length of 

 the linea aspera. Use To move the thigh inwards, and assist 

 in bending it. 



Obturator externus arises from the obturator ligament, and half 

 of the thyroid hole. Inserted into the femur near the root of the 

 great trochanter. Use To pull forwards and rotate the thigh. 



Gluteus maximus arises from the spine of the ilium, posterior 

 sacro-ischiatic ligaments, and os sacrum. Inserted into the upper 

 part of the linea aspera of the femur. Use To extend the thigh, 

 and assist in its rotary motion. 



Gluteus medius arises from the spine and superior surface of the 

 ilium. Inserted into the great trochanter of the os femoris. Use 

 To assist the gluteus maximus. 



Gluteus minimus arises from the outer surface of the ilium and 

 border of its great notch. Inserted into the root of the great tro- 

 chanter. Use To assist the former. 



Pyriformis arises from the anterior part of the os sacrum. In- 

 serted into a cavity at the root of the great trochanter. Use To 

 roll the thigh outwards. 



Gemini arises from the spine and tuberosity of the ischium. In- 

 serted into the same cavity as the pyriformis. Use To roll the 

 thigh outwards. 



Quadratus femoris arises from the tuberosity of the ischium. In- 

 serted into a ridge between the two trochanters. Use To move 

 the thigh outwards. 



MUSCLES SITUATED ON THE THIGH. 



Facialis arises from the upper spinous process of the ilium. In- 

 serted into the inner side of the membranous fascia which covers 

 the thigh. Use To stretch the fascia. 



Sartorius arises from the upper s-pinous process of the ilium. 



