EXAM 3 STARTS: Posterior Abdominal Wall

Question 1

is there a physical barrier between the abdominal and pelvic cavities

Answer 1

no

Question 2

whats the ceiling of the posterior abdominal wall

Answer 2

the diaphragm

Question 3

what portion of the vertebral column is the posterior abdominal wall

Answer 3

T12-L5

Question 4

where does the diaphragm stop

Answer 4

T12

Question 5

what does psoas major do

Answer 5

produces motion of lower limbs

Question 6

what does the quadratum lumborum do

Answer 6

trunk stability, doesnt more lower limb

Question 7

what do psoas major and quadratum lumborum attach to

Answer 7

lumbar vertebrae transverse processes

Question 8

what does the iliacus do

Answer 8

produces motion of lower limbs

Question 9

what is the innervations of the quadratus lumborum

Answer 9

ventral rami of T12-L4

Question 10

what is the innervation of the psoas major and minor

Answer 10

ventral rami of L1-3

Question 11

what is the innervation of the iliacus

Answer 11

femoral nerve

Question 12

where does psoas major attach in relation to the quadratus lumborum

Answer 12

anterior to QL

Question 13

what innervates the thoracolumbar fascia

Answer 13

dorsal ramus

Question 14

what type of muscles are QL and PMm

Answer 14

abdominal muscles

Question 15

what are the arcuate ligaments

Answer 15

thickened edges of the diaphragm
-lateral arcuate ligament, medial arcuate ligament, median arcuate ligament

Question 16

what is the lumbar plexus

Answer 16

a set of nerves made of the ventral rami of the T12 through L5 spinal nerves

Question 17

what type of axons are in the lumbar plexus

Answer 17

somatic motor, somatic sensory, and sympathetics to visceral body wall structures

Question 18

where do lumbar plexus nerves carry axons from

Answer 18

more than one spinal cord level

Question 19

why is the lumbar plexus necessary

Answer 19

the large muscles of the limbs need to be more complex than the simple strips of muscles derived from single myotomes. they are derived from multiple myotomes so they require innervation from the corresponding multiple spinal nerves. it is more efficient to combine axons supplying large muscles into large nerves

Question 20

are the patterns of somatic sensory supply to the skin of the limbs the same when comparing dermatomes to nerves

Answer 20

no

Question 21

where are the nerves of the skin of limbs from

Answer 21

axons that supply dermatomes associated with multiple spinal cord levels

Question 22

what vertebrae is the subcostal nerve supplied by

Answer 22

T12

Question 23

what supplies the subcostal nerve and what axons

Answer 23

ventral rami, somatic motor, somatic sensory, sympathetic

Question 24

what vertebrae is the iliohypogastric nerve supplied by

Answer 24

L1

Question 25

what supplies the iliohypogastric nerve and what axons

Answer 25

ventral rami, somatic motor, somatic sensory, and sympathetic

Question 26

what vertebrae is the ilioinguinal nerve supplied by

Answer 26

L1

Question 27

what supplies the ilioinguinal nerve and what axons

Answer 27

anteriod abdominal wall, somatic motor, somatic sensory and sympathetic

Question 28

what vertebrae is the genitofemoral nerve supplied by

Answer 28

L1-2

Question 29

where is sensory innervation in genitofemoral nerve found

Answer 29

only in females

Question 30

what vertebrae is the lateral femoral cutaneous nerve supplied by

Answer 30

L2-3

Question 31

what type of innervation innervates the lateral femoral cutaneous nerve

Answer 31

sensory only

Question 32

what vertebrae is the femoral nerve supplied by

Answer 32

L2-4

Question 33

where is somatic motor innervation located in the femoral nerve

Answer 33

front part of thigh

Question 34

where is somatic sensory innervation located in the femoral nerve

Answer 34

skin

Question 35

where is sympathetic innervation located in the femoral nervee

Answer 35

skin

Question 36

what vertebrae is the obturator nerve located at

Answer 36

L2-4

Question 37

what vertebrae is the lumbosacral trunk located at

Answer 37

L4-5

Question 38

what does the lumbosacral trunk contribute to

Answer 38

sciatic nerve

Question 39

what is miliary tuberculosis of the spine

Answer 39

bacterial infection in vertebral bodies, pus in column, looks like millet seed, pinches ventral rami

Question 40

what happens in tuberculosis to the psoas muscle

Answer 40

it can become enlarged from pus, result in motor and sensory dysfunction from compression

Question 41

what nerve is involved in the inflammation of the psoas major muscle

Answer 41

femoral nerve