Superficial Back Musculature Flashcards Preview

Spinal Anatomy I - Exam 3 > Superficial Back Musculature > Flashcards

Flashcards in Superficial Back Musculature Deck (20)
Loading flashcards...
1
Q

What muscles are associated with the five muscle layers of the true back?

A
  • 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
Q

Which of the muscles attaching to the spinous processes represent layer one?

A
  • trapezius

- latissimus dorsi

3
Q

Which of the muscles attaching to the spinous processes represent layer two?

A
  • rhomboid major

- rhomboid minor

4
Q

Which of the muscles attaching to the transverse processes represent layer two?

A

levator scapulae

5
Q

Which of the muscles attaching to the scapula represent layer two?

A
  • levator scapulae
  • rhomboid major
  • rhomboid minor
6
Q

Which of the muscles attaching to the humerus represent layer one?

A

latissimus dorsi

7
Q

Which of the muscles attaching to the lateral mass of C1 represent layer two?

A

levator scapulae

8
Q

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?

A

trapezius

9
Q

Which of the muscles in layer two acts to laterally flex and rotate the neck and bilaterally acts to extend the neck?

A

levator scapulae

10
Q

Which of the muscles in layer one acts solely on the humerus?

A

latissimus dorsi

11
Q

Which of the muscles in layer two acts solely on the scapula?

A
  • rhomboid major

- rhomboid minor

12
Q

Which of the muscles of the true back is innervated by the spinal accessory nerve?

A

trapezius

13
Q

What forms the spinal accessory nerve?

A

C1-C5 cord levels contribute to the spinal root

14
Q

Which of the muscles of the true back is innervated by the thoracodorsal nerve?

A

latissimus dorsi

15
Q

What forms the thoracodorsal nerve?

A

ventral rami from C6-C8

16
Q

Which of the muscles of the true back are innervated by the dorsal scapular nerve?

A
  • levator scapulae
  • rhomboid major
  • rhomboid minor
17
Q

What forms the dorsal scapular nerve?

A

the ventral ramus of C5

18
Q

The levator scapula is innervated by what nerves?

A
  • dorsal scapular nerve (ventral ramus of C5)

- branches from C3, C4 ventral rami

19
Q

The rhomboid major is innervated by what nerves?

A
  • dorsal scapular nerve (ventral ramus of C5)

- branches from C4 ventral ramus

20
Q

The rhomboid minor is innervated by what nerves?

A
  • dorsal scapular nerve (ventral ramus of C5)

- branches from C4 ventral ramus

Decks in Spinal Anatomy I - Exam 3 Class (94):