HAE Quiz 1: Back Flashcards
Trapezius
O: External occipital protuberance, superior nuchal line, ligamentum nuchae, spinous processes of C7 and thoracic vertebrae
I: Lateral 1/3 of clavicle, acromion, spine of scapula
N: Accessory nerve
F: Superior fibers elevate and laterally rotate scapula; middle fibers retract scapula; inferior fibers depress and laterally rotate scapula
Latissimus dorsi
O: Spinous processes of lower thoracic and lumbar vertebrae, iliac crest, sacrum
I: ntertubercular groove of humerus
N: Thoracodorsal nerve
F: Extends, adducts and medially rotates humerus
Levator scapulae
O: Transverse processes of upper cervical vertebrae
I: Superior angle of scapula
N: Dorsal scapular nerve
F: Elevates scapula
Rhomboid major and minor
O: Spinous processes of lower cervical and upper thoracic vertebrae
I: Medial border of scapula
(rhomboid minor superior to the spine; rhomboid major inferior to the spine
N: Dorsal scapular nerve
F: Retracts and medially rotates scapula
Splenius capitis and cervicis
O: Ligamentum nuchae, spinous processes of C7 and upper thoracic vertebrae
I: Capitis: mastoid process and superior nuchal line
Cervicis: transverse processes of upper cervical vertebrae
N: Dorsal rami of spinal nerves
F: Acting bilaterally, they extend the head and neck; acting unilaterally, they rotate the head to one side
Erector spinae
O: Sacrum, iliac crest, ribs, spinous and transverse processes of vertebrae
I: Spinous and transverse processes of vertebrae, ribs, skull
N: Dorsal rami of spinal nerves
F: Acting bilaterally, they extend the head and trunk; acting unilaterally, they bend the trunk laterally; they are also important for “controlling” flexion
Semispinalis capitis
O: Transverse processes of lower cervical and upper thoracic vertebrae
I: Occipital bone near nuchal lines
N: Dorsal rami of spinal nerves
F: Acting bilaterally, they extend the head; acting unilaterally, they rotate the head to one side
