NATS 1650 Lecture Notes - Lecture 4: Deltoid Tuberosity, Iliac Crest, Radial Tuberosity

• School: York University
• Department: Natural Science
• Course: NATS 1650
• Professor: Dr. Nicolette Richardson

Document Summary

Abdomen muscles: external oblique, origin: outer surface of ribs, action: flex vertebral column, rotation of vertebral column, and lateral flexion of. Internal oblique: origin: lumbar fascia (on back) iliac crest, action (same as eo); flex vertebral column, rotation of vertebral column, and lateral. Insertion: linea alba, lower ribs flexion of vertebral column. Transversus abdominus: origin: lumbar fascia (on back) iliac crest, action: compress abdominal contents. Deltoid: origin: clavicle, acromion, spine of scapula, actions: arm abduction. Flexion of humerus, extension of humerus, medial and lateral of. Insertion: greater tubercle of humerus: action: abduction of arm, stabilizes should joint. Infraspinatus: origin: infraspinous fossa, action: lateral rotation of arm, stabilizes joint. Teres minor: origin: lateral border of scapula, action: lateral rotation of arm, stabilizes should joint. Subscapularis: origin: subscapular fossa, action: medial rotation of the arm, stabilizes should joint. Teres major: origin: inferior angle of scapula, distal attachment: bicipital groove of humerus, actions: medial rotation of arm, extension of arm, adduction of arm.