Front | Back |
Zygomaticus major - Origin
(Face and Neck) |
Zygomatic bone
|
Zygomaticus major - Insertion
(Face and Neck) |
Angle of mouth
|
Zygomaticus major - Action
(Face and Neck) |
Elevates and abducts upper lip (as in laughing)
|
Sternocleidomastoid - Origin
(Face and Neck) |
Sternum, clavicle
|
Sternocleidomastoid - Insertion
(Face and Neck) |
Mastoid process
|
Trapezius - Origin
(Posterior Thorax) |
Occipital bone, Vertebrae (spines of C7-T12)
|
Trapezius - Insertion
(Posterior Thorax) |
Clavicle, Scapula (spine and acromion)
|
Trapezius - Action
(Posterior Thorax) |
Elevates and depresses scapula; rotates scapula
|
Latissimus dorsi - Origin
(Posterior Thorax) |
Vertebrae (spines of T7-L5), Ribs 8-12, sacral and iliac crests
|
Latissimus dorsi - Insertion
(Posterior Thorax) |
Humerus (intertubercular groove)
|
Latissimus dorsi - Action
(Posterior Thorax) |
Adducts, extends, and rotates arm (medially); Draws arm posteriorly
|
Pectoralis major - Origin
(Anterior Thorax) |
Clavicle (medial half), sternum (body), cartilages of ribs 2-6
|
Pectoralis major - Insertion
(Anterior Thorax) |
Humerus (greater tubercle)
|
Pectoralis major - Action
(Anterior Thorax) |
Adducts, flexes, and medially rotates arm
|
Deltoid - Origin
(Shoulder) |
Clavicle, scapla (spine and acromion)
|