Flashcards in Superficial Back Musculature Deck (20):
1
What muscles are associated with the five muscle layers of the true back?
- layer one: trapezius and latissimus dorsi
- layer two: rhomboid major and minor, levator scapulae
- layer three: serratus posterior superior and inferior
- layer four: erector spinae
- layer five: transversospinalis
2
Which of the muscles attaching to the spinous processes represent layer one?
- trapezius
- latissimus dorsi
3
Which of the muscles attaching to the spinous processes represent layer two?
- rhomboid major
- rhomboid minor
4
Which of the muscles attaching to the transverse processes represent layer two?
levator scapulae
5
Which of the muscles attaching to the scapula represent layer two?
- levator scapulae
- rhomboid major
- rhomboid minor
6
Which of the muscles attaching to the humerus represent layer one?
latissimus dorsi
7
Which of the muscles attaching to the lateral mass of C1 represent layer two?
levator scapulae
8
Which of the muscles in layer one acts to extend and laterally flex the head and neck and bilaterally acts to extend the head and neck?
trapezius
9
Which of the muscles in layer two acts to laterally flex and rotate the neck and bilaterally acts to extend the neck?
levator scapulae
10
Which of the muscles in layer one acts solely on the humerus?
latissimus dorsi
11
Which of the muscles in layer two acts solely on the scapula?
- rhomboid major
- rhomboid minor
12
Which of the muscles of the true back is innervated by the spinal accessory nerve?
trapezius
13
What forms the spinal accessory nerve?
C1-C5 cord levels contribute to the spinal root
14
Which of the muscles of the true back is innervated by the thoracodorsal nerve?
latissimus dorsi
15
What forms the thoracodorsal nerve?
ventral rami from C6-C8
16
Which of the muscles of the true back are innervated by the dorsal scapular nerve?
- levator scapulae
- rhomboid major
- rhomboid minor
17
What forms the dorsal scapular nerve?
the ventral ramus of C5
18
The levator scapula is innervated by what nerves?
- dorsal scapular nerve (ventral ramus of C5)
- branches from C3, C4 ventral rami
19
The rhomboid major is innervated by what nerves?
- dorsal scapular nerve (ventral ramus of C5)
- branches from C4 ventral ramus
20