Muscle (AOI) Flashcards

•Actions–Extension of the vertebral column and head–Lateral flexion if one side contracts

• Action:

​-Thigh Flexion

• Action:

​-Hip Abduction-Hip Extension-Lateral Thigh RotationOrign: Posterior surface of Ilium, Sacrum, CoccyxInsertion: Gluteal tuberosity of Femur and Iliotibial Tract

•Action:
–Trunk (vertebral column) Flexion

•Action:
–Trunk Flexion
–Trunk Rotation if only one side contracts

•Action:
–Trunk Flexion
–Trunk Rotation if only one side contracts

•Action:
–Compression of Abdominal Wall

•Origin: Medial Clavicle, Sternum and Cost. Cartilages 1-6•Insertion: Intertubercular Groove of Humerus
•Action: Adduction and Medial Rotation of arm

•Origin: Lateral 1/3 clavicle, Acromion of scapula, Spine of scapula•Insertion: Deltoid Tuberosity of Humerus•Action: –Anterior Fibers: Flexion–Middle Fibers: Abduction of Arm–Posterior Fibers: Extension

• Actions:

-Rotates and Protracts Scapula-Elevates Ribs

• Origin:Ribs 1-8/9
• Insertion: Medial Border of Scapula

•Actions:
–Scapular Elevation, Upward Rotation, aids lateral flexion of neck

•Action:
–Scapular Retraction and Elevation

•Origin: Occipital Bone, Spinous Processes of C7-12
•Insertion: Lateral Clavicle, Spine and Acromion of Scapula
•Action:
–Upper Fibers: Scapular Elevation, Upward Rotation
–Middle Fibers: Scapular Retraction
–Lower Fibers: Scapular Depression

•Origin: T6-L5 and Sacral Spinous Processes, Iliac Crest, Ribs 9-12, Inf. Angle of Scapula
•Insertion: Intertubercular Groove of Humerus
•Action: Adduction, Medial Rotation, Extension of Arm

•Origin: Supraspinous Fossa of Scapula
•Insertion: Greater Tubercle of Humerus
•Action: Abduction of Arm
- Holds head of humerus in glenoid cavity