MUSCULAR SYSTEM OF THE RED HOWLING MONKEY 



125 



Function: The combined muscle produces flexion of the thigh on 

 the hip as well as lateral rotation of the femur. 



M. psoas minor: Fusiform and elongated, it extends between the 

 higher lumbar vertebrae and the linea arcuata of the pelvis. It arises 

 by mostly tendinous fibers from lumbar bodies 1 to 3 and the corre- 

 sponding intervertebral disks. These fascicles are short, rapidly be- 



FiGURE 36. — Muscular attachments on the hip bone (1, m. gluteus medius; 2, m. sartorius; 

 3, m. tensor fasciae latae; 4, m. scansorius; 5, m. rectus femoris; 6, m. pectineus; 7, m. 

 gracilis; 8, m. adductor longus; 9, m. adductor brevis; 10, m. adductor magnus; 11, m. 

 semimembranosus; 12, m. semitendinosus; 13, m. biceps femoris; 14, m. gemellus inferior; 

 15, m. gemellus superior; 16, m. gluteus minimus; 17, m. gluteus maximus; 18, m. piri- 

 formis: 19. m. obturatorius externus; 20, m. quadratus femoris. 



