Anatomy Units 2 And 3

Front 1

Pectoralis major O&I

Back 1

O - Medial clavicle; costal cartilages of ribs 2-6; body of sternum

I - Lateral part of intertubercular groove of humerus

Front 2

Pectoralis major Action and innervation

Back 2

Action - Agonist of arm flexion; also adducts and medially rotates arm

Innervation - Lateral Pectoral and medial pectoral nerves

Front 3

Biceps Brachii long head O&I

Back 3

O - Supraglenoid tubercle of scapula

I - Radial tuberosity and bicipital aponeurosis

Front 4

Biceps Brachii long head Action and innervation

Back 4

Action - Flexes arm

Innervation - Musculocutaneous nerve

Front 5

Coracobrachialis O&I

Back 5

O - Coracoid process of scapula

I - Middle medial shaft of humerus

Front 6

Coracobrachialis action and innervation

Back 6

Action - Adducts and flexes arm

Innervation - Musculocutaneous nerve

Front 7

Brachialis O&I

Back 7

O - Distal anterior surface of humerus

I - Tuberosity and coronoid process of ulna

Front 8

Brachialis Action and Innervation

Back 8

Action - Primary flexor of forearm

Innervation - Musculocutaneous nerve

Front 9

Brachioradialis O&I

Back 9

O - Lateral suprcondylar ridge of humerus

I - Styloid process of radius

Front 10

Brachioradialis Action and innervation

Back 10

Action - Flexes forearm

Innervation - Radial nerve

Front 11

Rectus Femoris O&I

Back 11

O - Anterior inferior iliac spine

I - Quadriceps tendon to patella then patellar ligament to tibial tuberosity

Front 12

Rectus Femoris Action and Innervation

Back 12

Action - Flexes thigh, extends leg

Innervation - Femoral nerve

Front 13

Vastus medialis O&I

Back 13

O - Intertrochanteric line and line aspera of femur

I - Quadriceps tendon to patella and then patellar ligament to tibial tuberosity

Front 14

Vastus medialis Action and Innervation

Back 14

Action - extends leg

Innervation - Femoral nerve

Front 15

Adductor longus O&I

Back 15

O - Pubis near pubic symphysis

I - Linea aspera of femur

Front 16

Adductor longus Action and innervation

Back 16

Action - adducts thigh; flexes thigh

Innervation - Obturator nerve

Front 17

Tibialis anterior O&I

Back 17

O - lateral condyle and proximal shaft of tibia; interosseous membrane

I - Metatarsal 1 and first (medial) cuneiform

Front 18

Tibialis anterior Action and innervation

Back 18

Action - Dorsiflexes foot; inverts foot

Innervation - deep fibular nerve

Front 19

Triceps brachii long head O&I

Back 19

O - infraglenoid tubercle of scapula

I - Olecranon of ulna

Front 20

Triceps brachia long head Action and innervation

Back 20

Action - Primary extensor of forearm; also extends and adducts arm

Innervation - Radial nerve

Front 21

Pronator teres O&I

Back 21

O - Medial epicondyle of humerus and coronoid process of ulna

I - Lateral surface of radius

Front 22

Pronator teres Action and innervation

Back 22

Action - Pronates forearm

Innervation - Median nerve

Front 23

Abductor digiti minimi O&I

Back 23

O - pisiform bone, tendon of flexor carpi ulnaris

I - Proximal phalanx of finger 5

Front 24

Abductor digiti minimi Action and innervation

Back 24

Action - Abducts finger 5

Innervation - Ulnar nerve

Front 25

Opponens pollicis O&I

Back 25

O - flexor retinaculum, trapezium

I - Lateral side of metacarpal 1

Front 26

Opponens pollicis Action and Innervation

Back 26

Action - Opposition of thumb

Innervation - Median nerve

Front 27

Semitendinosus O&I

Back 27

O - ischial tuberosity

I - Proximal medial surface of tibia

Front 28

Semitendinosus Action and Innervation

Back 28

Action - Extends thigh and flexes leg; medially rotates leg

Innervation - Tibial division of sciatic nerve

Front 29

Fibularis (peroneus) brevis O&I

Back 29

O - midlateral shaft of fibula

I - base of metatarsal 5

Front 30

Fibularis (peroneus) brevis Action and innervation

Back 30

Action - everts foot; weak plantar flexor

Innervation - superficial fibular nerve

Front 31

Gastrocnemius O&I

Back 31

O - superior posterior surfaces of lateral and medial condyles of femur

I - calcaneus

Front 32

Gastrocnemius Action and Innervation

Back 32

Action - Flexes leg; plantar flexes foot

Innervation - tibial nerve

Front 33

Tibialis posterior O&I

Back 33

O - fibula, tibia, and interosseous membrane

I - metatarsals 2-4; navicular bone; cuboid bone; all cuneiforms

Front 34

Tibialis posterior Action and Innervation

Back 34

Action - plantar flexes foot; inverts foot

Innervation - tibial nerve

Front 35

Abductor hallucis O&I

Back 35

O - Calcaneus

I - medial side of proximal phalanx of great toe

Front 36

Abductor hallucis Action and Innervation

Back 36

Action - Abducts great toe

Innervation - medial plantar nerve

Front 37

Lumbricales O&I

Back 37

O - Tendons of flexor digitorum longus

I - Tendons of Extensor Digitorum longus

Front 38

Lumbricales Action and Innervation

Back 38

Action - Flexes MP joints and extends PIP and DIP joints of toes 2-5

Innervation - Medial plantar nerve (1st lumbrical); lateral plantar nerve (2nd-4th lumbricals)

Front 39

Flexor digiti minimi brevis O&I

Back 39

O - Base of 5th metatarsal

I - Proximal phalanx of 5th toe

Front 40

Flexor digiti minimi brevis Action and Innervation

Back 40

Action - flexes 5th toe

Innervation - Lateral plantar nerve

Front 41

Pectineus O&I

Back 41

O - Pectineal line of pubis

I - Pectineal line of femur

Front 42

Pectineus Action and Innervation

Back 42

Action - Adducts thigh, flexes thigh

Innervation - Femoral or obturator nerve