Posterior Muscles Of The Human Torso Flashcards
Levator scapulae
Origin: Cervical Vertebrae 1-4
Insertion: Scapula
Action: Elevates and rotates the Scapula
Splenius capitis
Origin: Cervical Vertebrae 7 tO Thoracic Vertebrae 4, ligamentum nuchae
Insertion: Occipital and Temporal bones
Action: Extends and rotates the head
Semispinalis capitis
Origin: Cervical Vertebrae 4 to Thoracic Vertebrae 7
Insertion: Occipital bone
Action: Extends and rotates the head
Erector spinae
Origin: Costae and Vertebrae
Insertion: Costae and Vertebrae
Actions: Extends and maintains erect posture of the vertebral column
Rhomboideus major
Origin: Thoracic Vertebrae 2-5
Insertion: Scapula
Action: Elevates and adducts the Scapula
Rhomboideus minor
Origin: Cervical Vertebrae 7 and Thoracic Vertebrae 1
Insertion:Scapula
Action: Elevates and adducts the Scapula
Latissimus dorsi
Origin: Vertebrae, Ilium , and Sacrum
Insertion: Humerus
Extends the arm
Trapezius
Origin: Occipital bone, Cervical Vertebrae 7 to Thoracic Vertebrae 12
Insertion: Scapula and Clavicle
Action: Rotates, adducts, and Depresses the Scapula
Supraspinatus
Origin: Scapula
Insertion: Humerus
Action: abducts the arm
Infraspinatus
Origin: Scapula
Insertion: Humerus
Action: Rotates the arm
Teres major
Origin: Scapula
Insertion: Humerus
Action: Extends and adducts the arm
Teres minor
Origin: Scapula
Insertion: Humerus
Action: Rotates and Extends the arm
