FIGURE MUSCLE ORIGIN INSERTION ACTION
Major Muscles of the Human Head; Pages 200-202
Lab 13.4 Epicranius-frontal belly Epicranial aponeurosis Skin of the eyebrows Raises eyebrows
Lab 13.4 Orbicularis oculi Frontal and maxillary bones Encircles orbit; inserts into tissue of eyelid Closes eye
Lab 13.4 Orbicularis oris Muscles around the mouth Encircles mouth, inserts into corners of mouth Closes lips; protrudes lips
Lab 13.4 Temporalis Temporal fossa Coronoid process of mandible Closes jaw; elevates & retracts mandible
Lab 13.4 Masseter Zygomatic arch & maxilla Angle and ramus of mandible Closes jaw
Muscles of the Neck; Pages 203-204
Lab 13.4, 13.6 Sternocleidomastoid Manubrium of sternum and medial clavicle Mastoid process of temporal bone Neck flexion w/both; bends head laterally and rotates to opposite side w/one
Anterior Muscles of the Thorax, Shoulder and Abdominal Wall; Pages 205-207
Lab 13.6 Pectoralis major Clavicle, sternum, rib 1-6 cartilages Intertubercular sulcus of humerus Shoulder flexion, adducts and medially rotates arm
Lab 13.6 Serratus anterior Lateral aspect of ribs 1-8 Medial border of anterior scapula Protracts and upwardly rotates scapula
Lab 13.6 Deltoid Lateral clavicle, acromion & spine of scapula Deltoid tuberosity of humerus Shoulder abduction
Lab 13.6 Pectoralis minor Anterior surface of ribs 3-5 Coracoid process of scapula Draws scapula forward & inferiorly
Lab 13.7 External intercostals Inferior border of rib above Superior border of rib below Elevates rib cage during inspiration
Lab 13.7 Internal intercostals Superior border of rib below Inferior border of rib above Depresses rib cage during expiration

FIGURE MUSCLE ORIGIN INSERTION ACTION
Lab 13.7 Diaphragm Inferior border of rib and sternum, last 6 ribs and lumbar vertebrae Central tendon Flattens to increase thoracic volume for inspiration
Lab 13.8 Rectus abdominis Pubic crest and symphysis Xiphoid process & costal cartilages of ribs 5-7 Flexes vertebral column
Lab 13.8 External oblique Anterior surface of last 8 ribs Linea alba, pubic crest and tubercles, and iliac crest Flexes and rotates vertebral column; lateral flexion; compresses abdomen
Lab 13.8 Internal oblique Inguinal ligament, iliac crest and lumbar fascia Linea alba, pubic crest & costal cartilage of last 3 ribs Flexes and rotates vertebral column; lateral flexion; compresses abdomen
Lab 13.8 Transverse abdominis Inguinal ligament, iliac crest, lumbar fascia & cartilage of last 6 ribs Linea alba and pubic crest Compresses abdomen to support abdominal viscera
Posterior Muscles of the Human Trunk; Pages 208-209

Lab 13.9 Trapezius Occipital bone, spine of C7 & all thoracic vertebrae Lateral clavicle, acromion & spine of scapula Raises, rotates & retracts scapula; Neck extension
Lab 13.9 Latissimus dorsi Spinous processes of T7-L5, last 4 ribs & iliac crest Intertubercular sulcus of humerus Extends, adducts, shoulder; medially rotates humerus
Lab 13.9 Infraspinatus Infraspinous fossa of scapula Greater tubercle of humerus Lateral rotation of humerus; stabilizes shoulder
Lab 13.9 Teres major Posterior surface at inferior angle of scapula Intertubercular sulcus of humerus Extends, adducts shoulder; medially rotates humerus
Lab 13.9 Teres minor Lateral margin of scapula Greater tubercle of humerus Lateral rotation of shoulder
Lab 13.9 Rhomboid major Spinous processes of T2-T5 Medial border of scapula Adducts, retracts, elevates and rotates scapula
Lab 13.9 Rhomboid minor Spinous processes of C7 and T1 Medial border of scapula Retracts and stabilizes scapula
Text –
p. 352 Subscapularis Subscapular fossa of scapula Lesser tubercle of humerus Medially rotates and stabilizes humerus
FIGURE MUSCLE ORIGIN INSERTION ACTION
Lab 13.9 Supraspinatus Supraspinous fossa of scapula Greater tubercle of humerus Abducts humerus and stabilizes shoulder
Muscles of the Humerus that Act on the Forearm; Page 212
Lab 13.10 Triceps brachii Infraglenoid