Torso, Arm, and Leg Muscles

536

deltoid

origin: clavicle

insertion: deltoid tuberosity of humerus

action: arm abduction

serratus anterior

origin: ribs 1-8

insertion: scapula

action: rotates scapula

pectoralis major

origin: clavicle

insertion: intertubercular sulcus of humerus

action: arm flexion

pectoralis minor

origin: ribs 3-5

insertion: coracoid process of scapula

action: draws scapula forward

537

infraspinatus

origin: infraspinous process

insertion: greater tubercle

action: lateral rotation of arm

rectus abdominis

origin: pubic crest

insertion: xiphiod process

action: rotates vertebral column

538

teres minor

origin: scapula

insertion: greater tubercle

action: lateral rotation of arm

539

teres major

origin: scapula

insertion: intertubercular sulcus

action: extends arm

latissimus dorsi

origin: iliac crest

insertion: intertubercular sulcus

action: arm extension

540

triceps brachii

origin: glenoid cavity

insertion: olecranon of ulna

action: forearm extension

566

adductor longus

origin: pubis

insertion: linea aspera

action: flexes thigh

563

rectus femoris

origin: iliac spine

insertion: patella

action: extends leg/flexes thigh

562

vastus lateralis

origin: linea aspera

insertion: patella

action: extends leg/flexes thigh

564

sartorius

origin: iliac spine

insertion: tibia

action: flexes thigh

tensor fascia lata

origin: iliac crest/spine

insertion: iliotibial tract

action: flexes thigh

gluteus maximus

origin: dorsal ilium

insertion: gluteal tuberosity

action: abducts thigh

gluteal medius

origin: ilium

insertion: greater trochanter

action: abducts thigh