Lab Activity 11: Group IIPronator TeresFlexor Carpi RadialisPalmaris LongusFlexor Carpi UlnarisFlexor Digitorum SuperficialisFlexor Pollicis LongusMUSCLES OF POSTEROLATERAL FOREARMBrachioradialisExtensor Carpi Radialis LongusExtensor Carpi Radialis BrevisExtensor DigitorumExtensor Carpi UlnarisExtensor Digiti MinimiSupinatorAbductor Pollicis LongusExtensor Pollicis BrevisExtensor Pollicis LongusMUSCLES OF DEEP BACK AND GLUTEAL REGIONGluteus MaximusGluteus MediusPiriformisQuadratus FemorisPsoas MajorIliacusPOSTERIOR COMPARTMENT OF THE THIGH (HAMSTRINGS)Biceps FemorisSemitendinosusSemimembranosusANTERIOR COMPARTMENT OF THE THIGHSartoriusRectus FemorisVastus LateralisVastus MedialisVastus IntermediusPOSTERIOR COMPARTMENT OF THE THIGHAdductor BrevisAdductor LongusAdductor MagnusGracilisANTERIOR AND MEDIAL THIGHTensor Fasciae LataeSUPERFICIAL POSTERIOR COMPARTMENT OF THE LEGGastrocnemiusSoleusPlantarisDEEP POSTERIOR COMPARTMENT OF THE LEGPopliteusTibialis PosteriorFlexor Digitorum LongusFlexor Hallucis LongusANTERIOR COMPARTMENT OF THE LEGTibialis AnteriorExtensor Hallucis LongusExtensor Digitorum LongusLATERAL COMPARTMENT OF THE LEGFibularis LongusFibularis BrevisThe EndLab Activity 11: Group IIMusclesMartini Chapter 11Portland Community CollegeBI 2312•Origin: Medial epicondyle of humerus and coronoid process of ulna •Insertion: Middle portion of radius •Action: Pronates and flexes forearm Pronator Teres Anterior, Superficial Layer3•Origin: Medial epicondyle of humerus •Insertion: Base of second metacarpal •Action: Flexes wrist and elbow and abducts wrist Flexor Carpi Radialis Anterior, Superficial Layer4•Origin: Medial epicondyle of the humerus •Insertion: Palmar aponeurosis •Action: Weak flexion of wrist, tenses skin of palm Palmaris Longus Anterior, Superficial Layer5•Origin: Medial epicondyle of humerus, olecranon process, & posterior ulna •Insertion: Pisiform, hamate, and fifth metacarpal •Action: Flexes and adducts wrist Flexor Carpi Ulnaris Anterior, Superficial Layer6•Origin: Medial epicondyle of humerus and coronoid process of ulna •Insertion: Middle phalanges of fingers •Action: Flexes fingers and wrist Flexor Digitorum Superficialis Anterior, Middle Layer7•Origin: Middle half of radius, interosseous membrane, coronoid process of ulna •Insertion: Distal phalanx of thumb •Action: Flexes thumb and wrist Flexor Pollicis Longus Anterior, Deepest LayerMUSCLES OF POSTEROLATERAL FOREARM9•Origin: Lateral supracondylar ridge •Insertion: Styloid process of radius •Action: Flexes forearm Brachioradialis Posterior, Superficial Layer10•Origin: Lateral supracondylar ridge of humerus •Insertion: Second metacarpal •Action: Extends and abducts hand Extensor Carpi Radialis Longus Posterior, Superficial Layer11•Origin: Lateral epicondyle of humerus •Insertion: Third metacarpal •Action: Extends and abducts hand Extensor Carpi Radialis Brevis Posterior, Superficial Layer12•Origin: Lateral epicondyle of humerus •Insertion: Into distal phalanx by 4 tendons •Action: Extends fingers and hand Extensor Digitorum Posterior, Superficial Layer13•Origin: Lateral epicondyle of humerus and posterior border of ulna •Insertion: Fifth metacarpal •Action: Extends and adducts hand Extensor Carpi Ulnaris Posterior, Superficial Layer14•Origin: Lateral epicondyle of humerus •Insertion: Extensor expansion of little finger •Action: Extends 5th digit and hand Extensor Digiti Minimi Posterior, Middle Layer15•Origin: Lateral epicondyle of humerus, supinator crest of ulna •Insertion: Lateral surface and posterior border of radius •Action: Supinates forearm Supinator Posterior, Deepest Layer16•Origin: Posterior surface of ulna and radius, and interosseous membrane •Insertion: First metacarpal •Action: Abducts thumb and hand Abductor Pollicis Longus Posterior, Deepest Layer17•Origin: Middle third of radius and interosseous membrane •Insertion: Base of proximal phalanx of thumb •Action: Extends thumb Extensor Pollicis Brevis Posterior, Deepest Layer18•Origin: Middle third of ulna and interosseous membrane •Insertion: Base of distal phalanx of thumb •Action: Extends thumb Extensor Pollicis Longus Posterior, Deepest LayerMUSCLES OF DEEP BACK AND GLUTEAL REGION20•Origin: Upper portion of ilium, the sacrum and coccyx •Insertion: Gluteal tuberosity and iliotibial tract •Action: Principal extensor and lateral rotator of femur Gluteus Maximus21•Origin: Middle portion of ilium Insertion: Oblique ridge on greater trochanter of femur •Action: Abducts femur, stabilizes contralateral hip while standing on one leg Gluteus Medius22•Origin: Pelvic surface of sacrum •Insertion: Greater trochanter of femur •Action: Rotates femur laterally Piriformis23•Origin: Ischial tuberosity •Insertion: Greater trochanter and shaft of femur •Action: Rotates thigh laterally Quadratus Femoris24•Origin: Transverse processes of bodies of lumbar vertebrae •Insertion: Lesser trochanter of femur with iliacus •Action: Flexes trunk and flexes and laterally rotates thigh Psoas Major25•Origin: Iliac fossa and lateral margin of sacrum •Insertion: Lesser trochanter of femur with psoas major •Action: Flexes and laterally rotates femur IliacusPOSTERIOR COMPARTMENT OF THE THIGH (HAMSTRINGS)27•Origin: Long head, ischial tuberosity;Short head, lateral supracondylar ridge of femur •Insertion: Head of fibula and lateral condyle of tibia •Action: Extends femur and flexes leg Biceps Femoris Long HeadShort Head28•Origin: Ischial tuberosity •Insertion: Medial condyle of tibia •Action: Extends femur and flexes leg Semitendinosus29•Origin: Ischial tuberosity •Insertion: Medial condyle of tibia •Action: Extends femur and flexes leg SemimembranosusANTERIOR COMPARTMENT OF THE THIGH31•Origin: Anterior superior iliac spine •Insertion: Medial margin of tibial tuberosity •Action: Flexes both femur and tibia Sartorius32•Origin: Anterior inferior iliac spine and upper margin of acetabulum •Insertion: Tibial tuberosity •Action: Extends tibia and flexes femur Rectus Femoris33•Origin: Intertrochanteric line and linea aspera of femur •Insertion: Tibial tuberosity •Action: Extends tibia Vastus Lateralis34•Origin: Intertrochanteric line and linea aspera of femur •Insertion: Tibial tuberosity •Action: Extends tibia Vastus Medialis35•Origin: Upper shaft of femur •Insertion: Tibial tuberosity •Action: Extends tibia