QUESTIONS AND ANSWERS 59 



Insertion: Superior and internal tuberosity of the radius, the 

 capsular and internal lateral ligament. 

 Action : FlexQ^.the forearm. 



Give the origin, insertion and action of the flexor metacarpi medius. 



This is the same as the oblique flexor of the metacarpus given 

 above. 



Name the muscles of the gluteal region, or croup. 

 Three : superficial, middle and deep glutei. 



Name the muscles attached to the upper third of the femur. 



Great psoas, iliopsoas, superficial, middle and deep glutei, ten- 

 sor fascia lata, vastus externus, vastus internus, pectineus, small 

 adductor of the thigh, great adductor of the thigh, quadratus fem- 

 oris, obturator externus, internal obturator, and gemelli. 



Give the origin and the insertion of the vastus externus muscle. 



Origin : Outer and anterior surfaces of the superior extremity of 

 the femur. 



Insertion : Superior face and external side of the patella. 



Give the origin, insertion and action of the popliteus. 



Origin : Outside the external condyle of the femur. 

 Insertion: Into the triangular surface on the posterior surface 

 of the tibia in its superior parts. 



Action: Flexes the tibia and rotates it outward. 



Describe the origin, insertion and action of the gastrocnemius. 



Origin : The external head from above and behind the external 

 •ondyle of the femur ; the internal head from the internal condyle. 



Insertion : Into the posterior part of the summit of the oa calcis 

 after passing into a bursa. 



Action : Extends the foot on the tibia. 



Give the origin, insertion and action of the sartorius. 



Origin: The iliac aponeurosis near the tendon of the psoas 

 parvus. 



Insertion : The internal patellar ligament. 

 Action : Adducts the leg and flexes the femur. 



Name and give the attachments of the muscles that flex the tarsus. 



1. Flexor metatarsi: the tendinous portion orginates from the 

 front of the femur between the trochlea and the external condyle 

 and is inserted in front of the superior extremity of the principal 

 metatarsus and to the cuboid bone ; the muscular portion originates 

 from the tibia on the sides of the groove through which the tendon 



