Lumbar

Question 1

4 characteristics of typical L1-L4

Answer 1

large body
short and leavy pedicles
thick strong laminae
thick rectangular SP

Question 2

3 characteristics of atypical L5

Answer 2

largest spine
large mamillary processes (for muscles attachment)
smallest SP of the region

Question 3

ROM of lumbar spine

Answer 3

F 40-60
E 20-35
SB 15-20
R 3-18

Question 4

what is the function of the anatomy of the lumbar spine

Answer 4

to be able to carry most of the body’s weight

Question 5

Role of lumbar ligs

Answer 5

all ligs except ALL (anterior longitudinal lig) become taut in F

movement and posture stretch spinal ligs

ligs indirectly protect spinal cord and nerve roots

spinal instability may occur on lig failure

Question 6

name 6 ligs of lumbar spine

Answer 6

ligamentum flavum
supraspinous
interspinous
intertransverse
ALL
PLL

Question 7

attachment and function of ligamentum flavum

Answer 7

A. surface of lamina and p. surface of lamina

limits and softens end range of intervertebral F

Question 8

attachment and function of supraspinous

Answer 8

between adjacent SP from c7-sacrum (most posteriorly)

limits F

Question 9

attachment and function of interspinous

Answer 9

between adjacent SP from c7-sacrum (internally/medially)

limits F

Question 10

attachment and function of intertransverse

Answer 10

between adjacent transverse processes

limits SB and F

Question 11

attachment and function of ALL
anterior longitudinal lig

Answer 11

occipital bone and A. surface of all vertebral bodies

limits E or excessive lordosis in cervical and lumbar regions &
reinforces the A. sides of intervertebral discs

Question 12

attachment and function of PLL
posterior longitudinal lig

Answer 12

posture surfaces of all vertebral bodies between C2 and sacrum

limits F & reinforces the P. sides of intervertebral discs