Origin
What is the origin of the Levator Scapula?
TP's of C1-C4 and posterior tubercles of TP C3 & 4
What muscle inserts directly on the root of the spine?
Lower Trapezius
What muscle is innervated by the accessory nerve (CN 11)?
Upper, Middle, and Lower Trapezius
Which 3 muscles are innervated by the dorsal scapular artery and the deep branch of the transverse cervical artery?
Rhomboid major, rhomboid minor, and levator scapulae
Adduction, extension, medial rotation of the humerus, and assists with scapular depression
What is the only muscle that has origins on the transverse processes of the vertebrae?
Levator scapulae
Which superficial back muscle has the most lateral insertion and what is it?
Latissimus dorsi; floor of bicepital groove
What muscle(s) does the dorsal scapular nerve innervate?
Rhomboid major, rhomboid minor, and levator scapula
What 3 muscles are primarily supplied by the dorsal scapular artery?
Rhomboid major, rhomboid minor, and levator scapula
Which muscle(s) are required for scapular retraction?
Middle trapezius and rhomboid major/minor
Latissimus dorsi
Upper Trapezius
Latissimus Dorsi
What is the sensory innervation of the Trapezius muscles?
Branches from ventral rami (C3, 4)
What is the blood supply to the Rhomboid minor?
Dorsal Scapular artery (C4,5)
Which muscle(s) are required for scapular protraction?
None in the superficial back (:
What is missing from this list of origins of the muscle that is innervated by the Thoracodorsal nerve?
The T-7-12 SP, lumbar SP, supraspinous ligaments, and post iliac crest via the post layer thoracolumbar fascia, outer lip of post iliac crest lateral to erector spine, muscular slips of ribs 9-12.
The Latissimus Dorsi also originates at the median sacral crest.
The innervation of this muscle is the thoracodorsal nerve (C6, 7, 8). What is this muscle and what is the insertion of this muscle?
Latissimus dorsi and the floor of the bicipital groove
What innervates the trapezius group and levator scapulae?
Branches from ventral rami (C3,4)
What muscles are supplied by the superficial branch of the transverse cervical artery?
Upper, middle, and lower trapezius
A patient came to you and stated that they were having pain whenever they try to use the rowing machine at the gym. What muscle(s) is likely to have a strain causing this pain?
Middle trapezius, rhomboid major, rhomboid minor
What are the origins of the three muscles that medially side and externally rotate the scapula?
Rhomboid Minor: Spinous Processes C7 & T1 & lower lig nuchae
Rhomboid Major: Spinous Processes T2-5
Middle Trapezius: Spinous process T1-6 & supraspinous ligaments
What is the insertion of the muscle that is innervated by both the ventral rami (C3,4) and dorsal scapular nerve (C5)?
The Levator Scapulaes insertion is at the medial border scapula between the superior angle and the root of the spine
The open-chain action for this muscle is scapular downward slide and upward rotation. What is this muscle and its innervation?
Lower trapezius
Motor: spinal part of the accessory nerve (CN 11)
Sensory: branches of the ventral rami (C3,4)
Which artery runs parallel to the medial border to the scapula?
Dorsal scapular artery
When I turn my head to the left I am using which superficial muscles? (include side of the body the muscle is on)
Right Upper Trapezius
Left Levator Scapula