Back and Spine

Question 1

Medial attachment of splenius

Answer 1

nuchal ligament, spinous processes of C7-T3

Question 2

Intrinsic superficial muscle

Answer 2

splenius

Question 3

Splenius two parts

Answer 3

capitis, superior to cervicis

Question 4

Function of splenius muscle: capitis and cervicis

Answer 4

Together, they extend the head (backward)

Seperately, they laterally flex and rotate the head

Question 5

Vascularization of the splenius muscle

Answer 5

Muscular branches off the aorta and branch of the posterior intercostal artery

Question 6

Transversospinalis:
- semispinalis

How many vertebrae does it span?

Answer 6

4-6
Arises from the the halfway point of back
most superficial of the transverospinalis muscle grouping

Question 7

Transversospinalis:

- Multifidus

Answer 7

spans 2-4 vertebrae
thickest in the lumbar region
oblique insertion

Question 8

Transversospinalis:

- rotatores

Answer 8

best developed in the lumbar region
span 1-2 vertebrae
deepest

Question 9

Where does spondylolysis occur?

Answer 9

L5, embryological problem

Question 10

What IS spina bifida?

Answer 10

failure of the vertebral lamina to fuse, so a herniation of the contents of the vertebral canal ensue

Question 11

Types of spina bifida

Answer 11

spina bifida occulta (hairy)
meningocele (meninges herniate)
myelomeningocele (meninges + spinal cord herniate)

Question 12

Which vertebra is considered the vertebra prominens?

Answer 12

C7

Question 13

Which artery vascularizes the trapezius muscle?

Answer 13

transverse cervical artery

Question 14

The artery and nerve that serve the latissimus dorsi are the same name. What is that name?

Answer 14

thoracodorsal

Question 15

The artery and nerve that serve the levator scapula and the rhomboids have the same name. What is that name?

Answer 15

dorsal scapular

Question 16

Which nerves innervate the serratus posterior superior

Answer 16

2-5 intercostal nerve

Question 17

Which nerves innervate the serratus posterior inferior?

Answer 17

9-11 intercostal and subcostal at T12

Question 18

Innervation of the splenius

Answer 18

posterior rami of spinal nerves

Question 19

What causes the mastoid process in infants?

Answer 19

splenius capitis pulling on it when they begin lifting their head up

Question 20

Tip: Intrinsic muscles are all innervated by

Answer 20

posterior rami of spinal nerves, so that means the splenius, erector spina, and transversospinales are all innervated the same way