A+ updated
1. Superior (descending) Trapezius Origin: external occipital protuberance, superior
nuchal line,
ligamentum nuchae
Insertion: lateral third of the clavicle
Action: elevates and retracts scapula
Innervation: spinal accessory nerve (cranial nerve XI)
2. Middle (transverse) TrapeziusOrigin: spinous processes of T1-T4
Insertion: spine and acromion of the
scapula Action: retracts scapula
Innervation: spinal accessory nerve (cranial nerve XI)
3. Inferior (ascending) TrapeziusOrigin: spinous processes T5-T12
Insertion: spine of the scapula
Action: depresses and retracts the scapula
,BPK 326 Exam 1 questions with answers graded
A+ updated
Innervation: spinal accessory nerve (cranial
nerve XI)
,BPK 326 Exam 1 questions with answers graded
A+ updated
4. Vertebral Latissimus Dorsi Origin: spinous processes of T7-T12 and the
thoracolumbar fascia
Insertion: the floor of the intertubercular (bicipital)
groove of the humerus
Action: adducts and medially rotates the arm at the
gleno- humeral joint (GHJ); extends humerus at the
GHJ; elevates and moves trunk anteriorly
Innervation: thoracodorsal nerve of the brachial
plexus (C6-C8)
5. Iliac Latissimus Dorsi Origin: iliac crest
Insertion: the floor of the intertubercular (bicipital)
groove of the humerus
Action: adducts and medially rotates the arm at the
gleno- humeral joint (GHJ); extends humerus at the
GHJ; elevates and moves trunk anteriorly
Innervation: thoracodorsal nerve of the brachial
, BPK 326 Exam 1 questions with answers graded
A+ updated
plexus (C6-C8)