intro to sacrum Flashcards Preview

OS II test 1 > intro to sacrum > Flashcards

Flashcards in intro to sacrum Deck (21):
1

lumbarization of sacrum

when S1 and S2 do not fuse

2

anterior surface of the sacrum is ___ posterior surface is __

concave, convex

3

the lateral rows/crests of sacrum are what and end as what

fusion of sacral TP and end as ILA

4

where is the sacral epidural nerve block performed

sacral hiatus

5

sacral canal contains what

cauda equina

6

what is the ganglion impar

where the right and left sympathetic chains join, rests on anterior aspect of coccyx

7

true pelvic ligaments

sacroiliac ligaments, attach bone to bone

8

anteior SI ligament attachments

3rd sacral segment to preauricular surface of ilium

9

interosseous sacroiliac ligament attachments

medial sacral crestes to iliac tuberosities

10

posterior SI ligament attachment

PSIS to 3rd and 4th sacral segments

11

sacrotuberous ligament has what attach here

gluteus maximus and tendon of biceps femoris

12

sacrotuberous and sacrospinous action

stabilize anterior, prevent posterior superior rotation

13

iliolumbar ligament attachment and function

attaches 4th and 5th lumbar verterba to iliac crests
stabilizes posterior motion, restricitng anterior motion of L4/L5

14

primary intrinsic muscles of pelvic diaphragm

levator ani group: iliococcyg, puborect, pubococcyg, coccyg

15

secondary muslces considered to have partial attachment to true pelvis

rectus ab, internal oblique, external oblique, transversus abdominus, quad lumborum

16

what spinal muslces also have direct connection to sacrum

eretor spinae and multifidus

17

force closure

hold an object by pressure on sides --->I

18

form closure

stacking or use of roman arch as self supporting structure

19

superior transverse sacral axes

respiratory axis
nutation and counternutation from SBS flexion/extension
articular processes of S2

20

middle transverse sacral axis

postural axis for flexion/extension in sitting and standing
level of body of S2

21

inferior S3 axis

iliosacral, axis for rotation of the iliums on sacrum
axis when moving and walking