MUSIC 120 Lecture Notes - Lecture 10: Triceps Brachii Muscle, Quadriceps Femoris Muscle, Lumbar Vertebrae
Document Summary
Rhomboids (one later deep from levator: origin: cervical/thoracic vertebrae. Insertion: medial border of scapula: action: adduction of scapula. Pectoralis major: origin: clavicle, sternum, and ribs. Insertion: humerus: action: flexion, adduction, and medial rotation of humerus. Latissimus dorsi: biggest muscle on back of body, origin: thoracic vertebrae, pelvis. Insertion: humerus: action: adduction, extends and medial rotation humerus. Insertion: humerus: action: abduction/flexion/extension, medial rotation of humerus. Insertion: humerus: action: adducts and lateral rotation humerus. Rotator cuff: 4 muscles dynamic stability of shoulder, act together and provide stability for activities like throwing a ball or any kind of movement overhead activity, subscapularis, supraspinatus, infraspinatus, teres minor. Insertion: radius: action: humerus and elbow flexion, anterior side of arm, 2 heads, short and long. Insertion: ulna: action: elbow flexion (primer mover) Insertion: ulna: action: extend humerus and elbow, posterior side of arm, 3 heads, long, lateral, and medium.
