Muscles of the Back and Thorax (Movement, SPOT TEST 1&2) Flashcards
Function of Serratus Anterior?
Holds the scapula against the thoracic wall
Protracts and laterally rotates the scapula
Origin of Serratus Anterior
Ribs 1-8 and relevant intercostal spaces
Insertion of Serratus Anterior
Medial border of the scapula (passes under before inserting)
Innervation of Serratus Anterior
Long Thoracic Nerve
Functions of Trapezius Muscle?
Upper fibres ELEVATE the scapula
Middle fibres RETRACT/ABDUCT the scapula
Lower fibres DEPRESS the scapula
All fibres working together rotate the scapula during abduction above 90 degrees
Origin of Trapezius
Spinous Processes of C1-T12
External Occipital Protuberance
Ligamentum Nuchae
Insertion of Trapezius
Superior spine of Scapula
Acromion
Lateral 1/3 of Clavicle
Innervation of Trapezius
Accessory Nerve (CN11)
Function of Deltoid
Abduction of arm beyond 15 degrees
Assistance in flexion and extension
Origin of Deltoid
Inferior to spine of scapula
Acromion
Lateral 1/3 of Clavicle
Insertion of Deltoid
Deltoid Tuberosity of the Humerus
Innervation of Deltoid
Axillary Nerve
Function of Lattisimus Dorsi
Adduction
Medial Rotation
Flexion
Extension
Origin of Latissimus Dorsi
T7-T12 Spinal Processes
Fascia over the Lumbar Vertebrae
Iliac Crest
Insertion of Latissimus Dorsi
Intertubercular Sulcus of humerus
Innervation of Latissimus Dorsi
Thoracodorsal Nerve
Function of Rhomboid Major
Elevation and retraction of the scapula
Origin of Rhomboid Major
Spinous Processes of T2-T5
Supraspinatous Ligaments
Insertion of Rhomboid Major
Posterior Medial Surface of the Scapula
root of spine to inferior angle
Innervation of Rhomboid Major
Dorsal Scapular Nerve
Function of Rhomboid Minor
Elevation and retraction of the scapula
Origin of Rhomboid Minor
Spinous Processes of C7-T1
Lower Ligamentum Nuchae
Insertion of Rhomboid Minor
Posterior Medial Scapula
superior angle to root of spine
Innervation of Rhomboid Minor
Dorsal Scapular Nerve