Bio 113 Anatomy and Physiology The Muscles. Muscles of the Head and Neck. Masseter. Orbicularis occuli. Orbicularis oris. Sternocleidomastoid

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1 Bio 113 Anatomy and Physiology The Muscles Muscles of the Head and Neck Masseter Orbicularis occuli Orbicularis oris Sternocleidomastoid Temporalis BIO 113 Fall 2011 Muscles Page 1 of 5

2 Muscles of the Trunk External Oblique Latissimus dorsi Pectoralis major Pectoralis minor Rectus abdominis Serratus anterior Trapezius: spinotrapezius, acromiotrapezius, and clavotrapezius Muscles of the Arm Biceps brachii Brachialis Brachioradialis Deltoids: acromiodeltoideus, spinodeltoideus and clavodeltoideus Triceps brachii Muscles of the Leg Biceps femoris Gastrocnemius Rectus femoris Gluteus maximus Gluteus medius Gracilis Sartorius Semimembranosus Semitendinosus BIO 113 Fall 2011 Muscles Page 2 of 5

3 Soleus Tensor fascia latae Tibialis anterior Vastus lateralis Vastus medialis Here are some really good study sites: BIO 113 Fall 2011 Muscles Page 3 of 5

4 Muscle Origin Insertion Action biceps brachii coracoid process, supraglenoid tubercle radial tuberosity flexes elbow, supinates forearm biceps femoris ischial tuberosity and tibia and fibula extends thigh, flexes brachialis distal anterior coronoid process of ulna flexes forearm brachioradialis deltoids: acromiodeltoideus, spinodeltoideus and clavodeltoideus external oblique gastrocnemius gluteus maximus gluteus medius gracilis latissimus dorsi masseter orbicularis occuli orbicularis oris pectoralis major pectoralis minor rectus abdominis lateral supracondylar ridge clavicle, acromion and scapular spine lower 8 ribs medial and lateral condyles of ilium, sacrum, coccyx ilium styloid process of radius deltoid tuberosity of iliac crest and linea alba calcaneal tendon onto calcaneus gluteal tuberosity of greater trochanter of the flexes forearm abducts arm flexion and rotation at waist flexes lower leg, plantarflexes foot major extensor of thigh abduction and medial rotation of thigh pubis medial tibia adducts thigh, flexes and medially rotates leg via thoracolumbar fascia, the lower 6 thoracic vertebrae, lumbar vertebrae, iliac crest zygomatic arch anterior surface of maxilla and mandible, angle of mouth medial wall of orbit clavicle, sternum, costal cartilages ribs 3,4,5 pubic crest and pubic symphysis intertubercular groove of angle and ramus of mandible margin of lips cutaneous facscia of eye greater tubercle of coracoid process of scapula ribs 5-7 and xiphoid process extends, adducts and medially rotates arm elevates mandible purses and puckers lips closes eye flexes, adducts and medially rotates arm draws scapula anteriorly and inferiorly flexion at waist BIO 113 Fall 2011 Muscles Page 4 of 5

5 Muscle Origin Insertion Action anterior inferior iliac patella and tibial extends, flexes spine tuberosity thigh at hip rectus femoris sartorius semimembranosus semitendinosus serratus anterior soleus sternomastoideus temporalis tensor fascia latae tibialis anterior trapezius: spinotrapezius, acromiotrapezius, and clavotrapezius triceps brachii vastus lateralis vastus medialis anterior superior iliac spine ischial tuberosity ischial tuberosity upper 8 ribs head of fibula and tibia tibia medial condyle of tibia medial aspect of proximal tibia anterior aspect of medial border of scapula calcaneal tendon onto calcaneus flexes, abducts and laterally rotates thigh; flexes extends thigh, flexes extends thigh, flexes protracts and rotates scapula superiorly and laterally plantarflexes foot manubrium, clavicle mastoid process singly, rotates head to opposite shoulder; together, flexes head temporal bone and temporal fossa iliac crest and anterior superior iliac spine lateral condyle and tibial shaft occipital bone, spines of C7 and all T vertebrae Infraglenoid tubercle of scapula, posterior greater trochanter of linea aspera coronoid proces of mandible iliotibial tract first cuneiform and first metatarsals spine and acromion of scapula, lateral clavicle olecranon process of the ulna patella and tibial tuberosity patella and tibial tuberosity elevates mandible steadies trunk on thigh dorsiflexes and inverts foot extends, elevates, rotates and retracts scapula; secondary: extends head extends forearm extends, stabilizes extends BIO 113 Fall 2011 Muscles Page 5 of 5