MUSCLES OF THE HIP AND THIGH. 91 



Flexor Brevis Minimi Digiti, from the tip of the unciform process and the 

 annular ligament, into the base of the 1st phalanx of the little finger, with 

 the preceding muscle. Action, as named. Nerve , ulnar. 



Opponens Minimi Digiti, from the unciform process and annular ligament, 

 into the whole ulnar margin of the 5th metacarpal bone. Action, a flexor 

 of the 5th metacarpal bone. Nerve, ulnar. 



Lumbricales (4), from the tendons of the deep flexor, into the expanded 

 tendons of the common extensor, on the dorsi of the phalanges. Action, 

 probably to flex the ist phalanges. Nerves, median and ulnar. 



Dorsal Interossei (4), by 2 heads from the adjacent sides of the metacarpal 

 bones, into the bases of the ist phalanges of the index, middle, and ring 

 fingers, the middle finger having two. Action, abductors of the fingers from 

 the median line. Nerve, ulnar. 



Palmar Interossei (3), from the palmar surfaces of the 2d, 4th, and 5th meta- 

 carpal bones, into the bases of the ist phalanges of the same fingers. 

 Action, adductors of the fingers. Nerve, ulnar. 



MUSCLES OF THE HIP AND THIGH. 



Psoas Magnus, 11 from the bodies, transverse processes, and inter vertebral 

 substances of the last dorsal and all the lumbar vertebrae, into the lesser 

 trochanter of the femur, by a common tendon with the iliacus. Action, to 

 flex and rotate the femur outwards, also to flex the trunk and pelvis on the 

 thigh. Nerves, anterior lumbar branches. 



Psoas Parvus, from the bodies nf the last dorsal and first lumbar vertebrae, 

 and the intervertebral substance, into the ilio-pectineal eminence, and the 

 iliac fascia. Action, when present it is a tensor of the iliac fascia. Nerves, 

 anterior lumbar branches. 



Iliacus, 10 from the iliac fossa, inner margin of the iliac crest, ilio-lumbar 

 ligament, base of the sacrum, anterior spinous processes of the ilium and 

 the notch between them, and from the capsule of the hip-joint, into the 

 outer side of the tendon of the psoas magnus. Action, the same as the 

 psoas magnus. Nerve, anterior crural. 



FASCIA LATA, the deep fascia of the thigh, extends from Poupart's ligament 

 to the prominent points around the knee-joint, and from the margin of the 

 sacrum and coccyx around the limb to the pubic arch and pectineal line. 

 It sends two strong intermuscular septa down to the linea aspera, and con- 

 tains the Saphenous Opening, which is formed by the reflected margins of 

 its pubic and iliac portions. Pouparf s Ligament is made by the knife, and 

 is only the line of junction between the aponeurosis of the external oblique 



