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Flashcards in S,I,D,V Deck (48):
1

What is the function of articular facets on vertebrae?

muscular attachments, restriction of movement

2

What is the only vertebra that does not have a vertebral body?

C1

3

What does C1 articulate with?

occipital condyle

4

What ligament runs through the vertebral canal?

posterior longitudinal ligament

5

What joint is at the same level as the commisures of the mouth?

atlantoccipital joint

6

Is the spinal cord located in the sacrum?

No, it ends at L2

7

What indicates myelomeningocele?

the cord and meninges are part of the outpocketing

8

What can generally be said about the blood supply to the vertebral column?

It is regional.

thoracic vert: intercostal a, v
lumbar vert: lumbar segmental a, v

9

What are the major branches of a lumbar segmental artery?

spinal branch
periosteal branch
equatorial branch
anterior vertebral canal branch
nutrient arteries

all anastomose!

10

What innervates the meninges, periosteum, bone and ligaments of the vertebral column?

recurrent meningeal n.

11

What arteries supply the spinal cord?

spinal arteries
redicular branches (has anterior + posterior roots)

12

How many anterior and posterior spinal arteries are there?

one anterior spinal a.
two posterior spinal a.

13

What is the venous drainage of the spinal cord?

two veins for every one artery

14

Why is venous drainage and extradural fat important?

thermoregulation--neurons do not regenerate easily

15

What is the action of the trapezius muscle?

elevate, depress, retract scapula

16

What is the neurovascular supply to the trap?

accessory n. (CN XI)
C3, C4

transverse cervical vessels

17

Where is the subtrapzial plexus located and what is it?

runs deep to the trap m.

superficial branch of transverse cervical artery, accessory nerve (CN XI)

18

What is the action of the lat?

adducts, extends, and medially rotates humerus

19

What is the neurovascular supply to the lat?

thoracodorsal n.

thoracodorsal vessels
intercostal vessels

20

What is the action of the levator scapulae?

elevate scapula

21

What is the neurovascular supply to levator scapulae?

C3 & C4
dorsal scapular n.

dorsal scapular vessels

22

What is the action of the rhomboid group?

retract (adducts) and elevates scapula

23

What is the neurovascular supply to rhomboid group?

dorsal scapular n.

dorsal scapular vessels.

24

What vertebral levels does serratus posterior superior m. act on?

T2- T5

25

What vertebral levels does serratus posterior inferior m. act on?

T9 - T12

26

From lateral to medial, what are the three muscles of erector spinae?

Iliocostalis
Longissimus
Spinalis

27

What is the action of splenius capitus m.?

bilaterally: draws head backward, extends neck

unilaterally: rotate head ipsilaterally

28

What is the action of the spenius cervicis?

bilaterally: extend neck (does NOT draw head back)

unilaterally: rotate head ipsilaterally

29

What is the innervation of the splenius capitus/cervicis?

posterior rami of the middle and lower cervical nn.

(all deep muscles have same innervation)

30

What is the action of the semispinalis capitus?

bilaterally: extend vertebral column

unilaterally: rotate trunk contralaterally

31

What are the borders of the occipital triangle?

laterally: olbliquus capitus sup.
medially/superiorly: rectus capitus major
inferiorly: obliquus capitus inf.

32

What is the contents of the occipital triangle?

vertebral artery
C1 nerve

33

What modality is C1?

ALL MOTOR

34

Which muscle does the greater occipital n. (C2) pierce?

semispinalis capitus m.

35

What happens if you injure C1?

can't rotate your head very well bc obliquus capitus inf. will not work (main rotator of head) but you can still extend your head due to lots of other muscles

36

What is the neurovascular supply to erector spinae m.?

dorsal rami of spinal nn.

lumber/intercostal vessels

37

What is the action of multifidus m.?

laterally flexes and rotates spine

38

What is the neurovascular supply to multifidus m.?

dorsal rami of spinal nn.

lumber/intercostal vessels

39

What is the action of the rotatores m.?

unilaterally: rotate spine

bilaterally: extend vertebral column

40

What is the neurovascular supply to rotatores m.?

dorsal rami of spinal nn.

lumber/intercostal vessels

41

What are the minor deep muscles of the back?

interspinalis m.
intertranservarius m.
levatores costarum m.

42

How are the superficial/intermediate muscles of the back innervated?

ventral rami

43

How are the deep muscles of the back innervated?

dorsal rami

44

Why is the midline a good place for an incision?

No cutaneous innervation crosses the midline

45

What is the action of the serrates anterior m.?

protract scapula, holds to body wall

46

What is the neurovascular supply of the serrates anterior m.?

long thoracic n.

lateral thoracic vessels

confusing--think loNg thoracic Nerve (both have n's)

47

What are the boundaries of the triangle of auscultation?

superior: trap m.

inferior: lat m.

lateral: rhomboid major m.

floor: 6th intercostal space

48

What are the boundaries of the lumbar triangle?

medial: lat m.

lateral: external oblique m.

inferior: iliac crest

floor: internal oblique m.