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Flashcards in The Back Deck (36):
1

Meninges of spinal cord

Dura mater
Arachnoid mater
Pia mater

2

Dura mater

outer "tough" layer of spinal cord

3

Arachnoid mater

middle "spiderweb-like" layer of spinal cord

4

Pia mater

inner "nourishing" layer of spinal cord
strictly adherent to spinal cord

5

epidural space

space between spine and dura mater
contains fat and veins of vertebral plexus

6

subdural space

space between dura mater and arachnoid mater
should be empty in vivo

7

denticulate ligaments

separate ventral and dorsal roots in spinal cord
keep spinal cord from twisting

8

ascent of spinal cord

as the person grows, the vertebrae grow caudally, making it appear that the spinal cord ascends

9

layers of intervertebral disks

annulus fibrosus
nucleus pulposus

10

annulus fibrosus

multilayered outer ring mostly made out of fibrocartilage

11

nucleus pulposus

inner jelly-like mass
will bulge out during disk herniation

12

where is annulus fibrosus thinnest

posterior (longitudinal ligament reinforces this area)

13

what part of vertebral disk is most prone to herniation

dorsolateral

14

what symptoms might a patient have if their disk herniates in the most typical pattern

experience dermatomal pain patterns because the herniation can irritate dorsal root ganglion

15

segmental innervation

is a muscle crosses a body segment, it is innervated by dorsal ramus of each segment it crosses

16

hypaxial

muscles of upper limb

17

epaxial

primarily responsible for moving or stabilizing vertebrae
all epaxial muscles have segmental innervation via dorsal rami

18

triangle of auscultation boundaries

trapezius, latissimus dorsi, scapula

19

triangle of auscultation use

used to listen to sounds of the thorax

20

5 superficial back muscles

trapezius
latissimus dorsi
levator scapulae
rhomboids

21

3 intermediate back muscles

serratus posterior superior
serratus anterior
serratus posterior inferior

22

assumptions you can make about intermediate back muscles

considered accessory breathing muscles
hypaxial origin
innervated by ventral rami

23

suboccipital triangle formed by

rectus capitis posterior major
obliques capitis superior
obliques capitis inferior

24

suboccipital triangle contents

suboccipital nerve emerges from center of triangle
arch of atlas
vertebral artery and vein (pass over atlas)
occipital artery and vein

25

subarachnoid space

space betweein arachnpoid mater and pia mater
contains CSF

26

what branches directly off of the spinal cord

dorsal root
ventral root

27

dorsal root is (sensory/motor)

sensory

28

ventral root is (sensory/motor)

motor

29

what is the nerve segment called where the ventral and dorsal root come together

mixed spinal nerve

30

what does the mixed spinal nerve divide into as it passes through the intervertebral foramen

dorsal ramus
ventral ramus

31

what does the dorsal ramus divide into

medial branch
lateral branch

32

what innervates muscle and skin at the spinal level of T6 and above

medial branch of the dorsal ramus

33

what does the lateral branch of the dorsal ramus innervate at the spinal level T6 and above

only muscle

34

what innervates muscle and skin below the T6 spinal level

lateral branch of the dorsal ramus

35

what does the medial branch of the dorsal ramus innnervate below the T6 spinal level

only muscle

36

what spinal level does the inferior angle of the scapula typically point to

T6