Upper Body Muscles Flashcards
Closes eye as in blinking
Orbicularis Oculi
Closes lips, protrudes lips as for kissing
Orbicularis
Compresses cheeks inward as when blowing air
Buccinator
Raises corner of moth as when smiling
Zygomaticus
Elevates Mandible
Masseter/Temporalis
Origin: sternum Insertion: temporal bone Action: pulls head to one side, flexes neck or elevates sternum
Sternocleidomastoid
Origin: occipital bone, cervical and thoracic vertebrae Insertion: scapula Action: rotates scapula
Trapezius
Elevates scapula
Levator Scapulae
Pulls scapula anteriority and downward
Serratus Anterior
Origin: sternal ends of upper ribs Insertion: scapula Action: pulls scapula forward and downward or raises ribs
Pectoralis Minor
Extends, adducts, and rotates the arm medially, or pulls the shoulder downward and back
Latissimus Dorsi
Origin: clavicle, sternum Insertion: Humerus Action: Flexes, adducts, and rotates arm medially
Pectoralis Major
Abducts, extends, and flexes the arm
Deltoid
Origin: Scapula Insertion: Radius Action: Flexes forearm at elbow and rotates hand laterally
Biceps Brachii
Flexes forearm at elbow
Brachialis