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Where does the trapezius muscle originate?
Occipital bone and spinous processes of thoracic vertebrae
What is the trapezius muscle responsible for?
Elevation, Retraction, and Depression or rotation of scapula
What is the function of the rhomboids?
adducts and performs downward rotation of scapula (pulls towards center of back)
Name the muscles categorized under the ventral group of the pectoral girdle.
Serratus anterior, Subclavius, and Pectoralis minor
What is the function of the serratus anterior?
protracts (abducts) scapula swinging the shoulder anteriorly and rotates the glenoid cavity moving it superiorly
What is the function of the pectoralis minor?
depresses and protracts shoulder and rotates scapula so glenoid cavity moves inferiorly
What is the function of the deltoid?
Abduction of shoulder and flexion or extension and medial or lateral movement of humerus
Name the muscles of the upper arm.
Deltoid, Supraspinatus, Teres major, Subscapularis, Infraspinatus, Teres minor, Coracobrachialis, pectoralis major, and Latissimus dorsi
Where does the pectoralis major originate?
Cartilage of ribs 2-6, body of sternum, and inferior medial portion of clavicle
Where does the pectoralis major insert?
Crest of greater tubercle and intertubercular groove of humerus
Where does the latissimus dorsi originate?
Spinous process of inferior thoracic and all lumbar vertebrae and ribs 8-12
What is the function of the long head of the triceps brachii?
Extension of elbow and extension and adduction of shoulder
Where does the extensor carpi radialis originate?
Lateral aspect of epicondyle and superior region of humerus
What is the function of the muscles of the thigh?
Designed to transfer weight and this extra bulk limits range of motion
Name the muscles of the gluteal group.
maximus, illiotibial tract, medius, minimus, and tensor fasciae latae
Where does the maximus originate?
Iliac crest and lateral surface of ilium, sacrum, coccyx, and thoracolumbar fascia
What is the iliotibial tract?
A band of collagenous fibers that extend along the lateral surface of the thigh
What is the function of the tensor fasciae latae?
Flexion and medial rotation at hip, laterally supports the knee
Name the muscles of the adductor group of the thigh.
Adductor brevis, Adductor longus, Adductor magnus, Pectineus, and Gracilis
What is the function of the adductor brevis and adductor longus muscles?
Adduction, Flexion, and medial rotation at hip
Name the extensor muscles of the lower leg.
Rectus femoris, Vastus intermedius, Vastus lateralis, and Vastus medius
Where does the rectus femoris insert?
Tibial tuberosity via quadriceps tendon, patella, and patellar ligament
What is the function of the vastus intermedius, vastus lateralis, and vastus medius?
Extension at knee
Name the flexors of the knee.
Biceps femoris, Semimembranosus, Semitendinosus, Sartorius, and Popliteus
What is the function of the semimebranosus and semitendinosus?
Flexion at knee, extension and medial rotation at hip
Where does the soleus originate?
Head and proximal shaft of fibula and adjacent posteromedial shaft of tibia
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