Lumbar spine

Question 1

typical lumbar vertebrae

Answer 1

L1-L4

w MAMILLARY PROCESS

Question 2

atypical lumbar vertebrae

Answer 2

L5

TRANSITIONAL

Question 3

ligaments in order from anterior to posterior

Answer 3

ALL
PLL
lig flavum
interspinal
supraspinous

Question 4

where in the lumbar spine does the spinal cord end

Answer 4

L1-L2 then becomes cauda equina “horses tail”

Question 5

2 joints in lumbar spine

Answer 5

facet - between vertebral arches

intervertebral - between vertebral bodies

Question 6

what ligaments are unique to the lumbar spine

Answer 6

iliolumbar ligaments
protect the lumbosacral joint

Question 7

lumbar spine extension is coupled w what

Answer 7

sacral nutation
anterior sacral tilt

Question 8

lumbar flexion is coupled w what

Answer 8

sacral counternutation
posterior sacral tilt

Question 9

C2-C5 coupled movements

Answer 9

IPSILATERAL

Question 10

T6-T5 coupled movements

Answer 10

CONTRALATERAL

Question 11

what are the abdominal muscles

Answer 11

internal obliques
external obliques
transverse abdominis
rectus abdominis

Question 12

O’s and I’s external obliques

Answer 12

external surface rib 5-12

linea alba, pubic tubercles
anterior 1/2 iliac crest

Question 13

actions of internal and external obliques

Answer 13

flexion and lateral flexion

Question 14

O’s and I’s internal obliques

Answer 14

ant and mid 1/3 iliac crest, lat 2/3 inguinal ligament

borders ribs 10-12, linea alba

Question 15

O’s and I’s transverse abdominis

Answer 15

costal cartilages 7-12
thoracolumbar fascia
iliac crest
inguinal ligament

linea alba, pubic crest

Question 16

O’s and I’s rectus abdominis

Answer 16

pubic crest, pubic symphysis

costal cartilage ribs 5-7, xiphoid process

Question 17

O’s and I’s pyramidalis

Answer 17

pubic crest

linea alba

Question 18

what 2 muscles form the iliopsoas

Answer 18

psoas major
iliacus

Question 19

O and I iliacus

Answer 19

superior 2/3 iliac fossa, internal lip iliac crest, ala, iliolumbar/sacroiliac ligaments

distal to lesser trochanter

Question 20

what innervates the iliacus

Answer 20

femoral nerve

Question 21

what innervates the psoas major/minor

Answer 21

lumbar plexus

Question 22

as a group what do the abdominal muscles do

Answer 22

compress and stabilize abdomen

Question 23

what rotation does the internal oblique perform

Answer 23

ipsilateral rotation of the trunk

Question 24

what rotation does the external obliques do

Answer 24

contralateral rotation

Question 25

what actions does the rectus abdominis do

Answer 25

trunk flexion
posterior pelvic tilt
compress and stabilize abdomen

Question 26

what innervates the oblique muscles

Answer 26

intercostal nerve ventral rami

Question 27

what is the linea alba

Answer 27

fibrous white line made of CT that runs down the midline of the abdomen

from xiphoid process to pubic symphysis

Question 28

what structure lives in the linea alba

Answer 28

the umbilicus

Question 29

what is a prime mover for hip flexion

Answer 29

iliopsoas

• tested as a group

can cause hyperlordosis

Question 30

O and I rotatores lumborum

Answer 30

TP’s of L1-L5
base of SP and lamina 1-2 segments above origin

Question 31

O and I multifidus lumborum

Answer 31

TP(mamillary process) L1-L5
SP’s 3-4 segments above

Question 32

O and I semispinalis thoracis

Answer 32

TP T6-T12
SP C6-T4

Question 33

spinalis thoracis

Answer 33

SP’s T11-L2
SP T1-T8

Question 34

what does the iliolumbar ligament span from

Answer 34

L5 to ilium