Posterior Abdominal Wall

Question 1

what is the ceiling of the abdominal cavity?

Answer 1

diaphragm

Question 2

what is the floor of the abdominal cavity?

Answer 2

pelvic organs
*no physical barrier

Question 3

posterior wall of abdominal cavity

Answer 3

spinal cord & some ribs

Question 4

anterior wall of abdominal cavity

Answer 4

ribs & associated cartilage

Question 5

what structure is this?

Answer 5

iliac crest

Question 6

what structure is this?

Answer 6

iliac fossa

Question 7

what structure is this?

Answer 7

anterior superior iliac spine

Question 8

what structure is this?

Answer 8

inguinal ligament

Question 9

what structure is this?

Answer 9

pubic tubercle

Question 10

what structure is this?

Answer 10

obturator foramen

Question 11

what structure is this?

Answer 11

sacrum

Question 12

what structure is this?

Answer 12

ilium

Question 13

what structure is this?

Answer 13

diaphragm

Question 14

what structure is this?

Answer 14

rib 12

Question 15

what structure is this?

Answer 15

iliac crest

Question 16

what structure is this?

Answer 16

iliacus muscle

Question 17

what structure is this?

Answer 17

quadratus lumborum muscle

Question 18

what structure is this?

Answer 18

psoas major muscle

Question 19

what structure is this?

Answer 19

psoas minor muscle

Question 20

innervation of the muscles of the posterior abdominal wall

Answer 20

somatic motor and sensory

Question 21

innervation of quadratus lumborum

Answer 21

ventral rami of T12-L4

Question 22

innervation of psoas major and minor

Answer 22

ventral rami of L1-3

Question 23

innervation of iliacus

Answer 23

femoral nerve

Question 24

quadratus lumborum

Answer 24

O: iliac crest
I: 12th rib & transverse processes of lumbar vertebrae
A: helps maintain balance

Question 25

iliacus muscle

Answer 25

O: ? I: femur A: hip flexion

Question 26

Psoas major

Answer 26

O: transverse processes of lumbar vertebrae I: femur A: hip flexion

Question 27

Psoas minor

Answer 27

frequently missing 1 or both -maybe add more? idk

Question 28

iliopsoas

Answer 28

iliacus + psoas

Question 29

what muscle?

Answer 29

quadratus lumborum

Question 30

what muscle?

Answer 30

Psoas major

Question 31

what muscle?

Answer 31

Psoas minor

Question 32

what muscles are these?

Answer 32

anterolateral abdominal wall mm.

Question 33

what structure is this?

Answer 33

thoracolumbar fascia

Question 34

what structure is this?

Answer 34

psoas fascia

Question 35

what structure is this?

Answer 35

quadratus fascia

Question 36

what structure is this?

Answer 36

diaphragm

Question 37

medial arcuate ligament

Answer 37

enlargement of fascia for attachment of diaphragm

Question 38

lateral arcuate ligament

Answer 38

enlargement of fascia for attachment of diaphragm

Question 39

median arcuate ligament

Answer 39

forms aortic hiatus

Question 40

right crus length

Answer 40

L1-3 *longer and thicker

Question 41

left crus length

Answer 41

L1-2

Question 42

what structure is this?

Answer 42

lateral arcuate ligament

Question 43

what structure is this?

Answer 43

medial arcuate ligament

Question 44

what structure is this?

Answer 44

median arcuate ligament

Question 45

what structure is this?

Answer 45

left crus

Question 46

what structure is this?

Answer 46

right crus

Question 47

what structure is this?

Answer 47

aortic hiatus

Question 48

what is the lumbar plexus?

Answer 48

set of bilateral nerves made of the ventral rami of T12-L5 spinal nerves

Question 49

what types of axons does the lumbar plexus carry?

Answer 49

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

Question 50

do the nerves in the lumbar plexus carry axons from just one spinal cord level?

Answer 50

no- carry axons from more than one spinal cord level *make big nerves out of smaller ones

Question 51

why is the lumbar plexus necessary?

Answer 51

the large muscles of the limb need to be more complex and require innervation from multiple spinal nerves *more efficient to combine the axons supplying large muscles into large nerves

Question 52

why do limb muscles require innervation from multiple spinal nerves?

Answer 52

because limb muscles are derived from multiple myotomes

Question 53

flexion of the hip

Answer 53

bringing knee closer to chest

Question 54

extension of the hip

Answer 54

bringing knee further from chest

Question 55

abduction of the hip

Answer 55

moving leg away from midline

Question 56

adduction of the hip

Answer 56

moving leg towards the midline

Question 57

ventral rami of spinal nerves carry:

Answer 57

somatic sensory somatic motor sympathetics to skin NO PARASYMPATHETICS

Question 58

nerves of the lumbar trunk are supplied by:

Answer 58

ventral rami of spinal nerves

Question 59

L1 passes _____ psoas major

Answer 59

behind

Question 60

T12=

Answer 60

subcostal nerve

Question 61

subcostal nerve contains

Answer 61

somatic motor, somatic sensory & sympathetics

Question 62

L1=

Answer 62

iliohypogastric nerve ilioinguinal nerve

Question 63

iliohypogastric nerve contains

Answer 63

somatic motor, somatic sensory & sympathetics

Question 64

ilioinguinal nerve contains

Answer 64

somatic motor, somatic sensory & sympathetics

Question 65

L1-2=

Answer 65

genitofemoral nerve

Question 66

genitofemoral nerve contains

Answer 66

somatic sensory ONLY in females somatic sensory and somatic motor in males also sympathetics

Question 67

L2-3=

Answer 67

lateral femoral cutaneous nerve

Question 68

lateral femoral cutaneous nerve contains

Answer 68

somatic sensory ONLY

Question 69

L2-4=

Answer 69

femoral nerve & obturator nerve

Question 70

femoral nerve contains

Answer 70

somatic motor, somatic sensory & sympathetics

Question 71

femoral nerve action

Answer 71

allows for hip flexion and knee extension

Question 72

obturator nerve contains

Answer 72

somatic motor, somatic sensory & sympathetics

Question 73

obturator nerve action

Answer 73

innervates thigh adductors

Question 74

L4-5=

Answer 74

lumbosacral trunk

Question 75

lumbosacral trunk

Answer 75

no individual function allows for contribution to other nerves from L4 and L5

Question 76

miliary tuberculosis of the spine

Answer 76

pellets of pus invade spine

Question 77

what nerve is this?

Answer 77

obturator nerve

Question 78

what structure is this?

Answer 78

lumbosacral trunk

Question 79

what structure is this?

Answer 79

sympathetic trunk

Question 80

what nerve is this?

Answer 80

femoral nerve

Question 81

what nerve is this?

Answer 81

genitofemoral nerve

Question 82

what nerve is this?

Answer 82

lateral femoral cutaneous nerve

Question 83

what nerve is this?

Answer 83

ilioinguinal nerve

Question 84

what nerve is this?

Answer 84

iliohypogastric nerve

Question 85

what nerve is this?

Answer 85

subcostal nerve

Question 86

what structure is this?

Answer 86

abdominal wall

Question 87

what structure is this?

Answer 87

quadratus lumborum

Question 88

what structure is this?

Answer 88

psoas major

Question 89

what nerve supplies this region?

Answer 89

subcostal nerve

Question 90

what nerve supplies this region?

Answer 90

ilioinguinal

Question 91

what nerve supplies this region?

Answer 91

genitofemoral nerve

Question 92

what nerve supplies this region?

Answer 92

lateral femoral cutaneous nerve

Question 93

what nerve supplies this region?

Answer 93

femoral nerve

Question 94

what nerve supplies this region?

Answer 94

obturator nerve