Superficial Back Muscles Flashcards
origin of the upper trapezius
occipital bone; spinous processes of C1-C7
origin of the middle trapezius
spinous processes of T1-T4
origin of the lower trapezius
spinous processes of T5-T12
insertion of the upper trapezius
clavicle
insertion of the middle trapezius
scapular acromion
insertion of the lower trapezius
scapular spine
innervation of trapezius (upper, middle, and lower)
accessory nerve
action of upper trapezius
draws scapula obliquely upward
action of middle trapezius
draws scapula medially
action of lower trapezius
draws scapula medially downward
origin of latissimus dorsi
spinous processes or T7-T12 vertebrae, scapula, 9th-12th ribs, and iliac crest
insertion of latissimus dorsi
floor of intertubercular groove
innervation of latissimus dorsi
thoracodorsal nerve (C6-C8)
action of latissimus dorsi
internal rotation, ADduction, and extension
origin of rhomboid minor
spinous processes of C6 and C7
origin of rhomboid major
spinous processes of T1-T4 vertebrae
insertion of rhomboid minor
medial border of scapula
insertion of rhomboid major
below scapular spine
innervation of rhomboid major and minor
dorsal scapular nerve
action of rhomboid major and minor
draws scapular medially upward
origin of levator scapulae
transverse processes of C1-C4
insertion of levator scapulae
scapula (superior angle)
innervation of levator scapulae
dorsal scapular nerve
action of levator scapulae
scapular ADduction and elevation
