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Anatomy Exam 3 > Posterior Abdominal Wall > Flashcards

Posterior Abdominal Wall Flashcards

1
Q

what is the ceiling of the abdominal cavity?

A

diaphragm

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2
Q

what is the floor of the abdominal cavity?

A

pelvic organs
*no physical barrier

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3
Q

posterior wall of abdominal cavity

A

spinal cord & some ribs

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4
Q

anterior wall of abdominal cavity

A

ribs & associated cartilage

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5
Q

what structure is this?

A

iliac crest

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6
Q

what structure is this?

A

iliac fossa

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7
Q

what structure is this?

A

anterior superior iliac spine

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8
Q

what structure is this?

A

inguinal ligament

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9
Q

what structure is this?

A

pubic tubercle

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10
Q

what structure is this?

A

obturator foramen

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11
Q

what structure is this?

A

sacrum

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12
Q

what structure is this?

A

ilium

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13
Q

what structure is this?

A

diaphragm

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14
Q

what structure is this?

A

rib 12

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15
Q

what structure is this?

A

iliac crest

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16
Q

what structure is this?

A

iliacus muscle

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17
Q

what structure is this?

A

quadratus lumborum muscle

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18
Q

what structure is this?

A

psoas major muscle

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19
Q

what structure is this?

A

psoas minor muscle

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20
Q

innervation of the muscles of the posterior abdominal wall

A

somatic motor and sensory

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21
Q

innervation of quadratus lumborum

A

ventral rami of T12-L4

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22
Q

innervation of psoas major and minor

A

ventral rami of L1-3

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23
Q

innervation of iliacus

A

femoral nerve

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24
Q

quadratus lumborum

A

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

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25
Q

iliacus muscle

A

O: ?
I: femur
A: hip flexion

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26
Q

Psoas major

A

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

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27
Q

Psoas minor

A

frequently missing 1 or both
-maybe add more? idk

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28
Q

iliopsoas

A

iliacus + psoas

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29
Q

what muscle?

A

quadratus lumborum

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30
Q

what muscle?

A

Psoas major

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31
Q

what muscle?

A

Psoas minor

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32
Q

what muscles are these?

A

anterolateral abdominal wall mm.

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33
Q

what structure is this?

A

thoracolumbar fascia

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34
Q

what structure is this?

A

psoas fascia

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35
Q

what structure is this?

A

quadratus fascia

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36
Q

what structure is this?

A

diaphragm

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37
Q

medial arcuate ligament

A

enlargement of fascia for attachment of diaphragm

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38
Q

lateral arcuate ligament

A

enlargement of fascia for attachment of diaphragm

39
Q

median arcuate ligament

A

forms aortic hiatus

40
Q

right crus length

A

L1-3
*longer and thicker

41
Q

left crus length

42
Q

what structure is this?

A

lateral arcuate ligament

43
Q

what structure is this?

A

medial arcuate ligament

44
Q

what structure is this?

A

median arcuate ligament

45
Q

what structure is this?

46
Q

what structure is this?

A

right crus

47
Q

what structure is this?

A

aortic hiatus

48
Q

what is the lumbar plexus?

A

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

49
Q

what types of axons does the lumbar plexus carry?

A

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

50
Q

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

A

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

51
Q

why is the lumbar plexus necessary?

A

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

52
Q

why do limb muscles require innervation from multiple spinal nerves?

A

because limb muscles are derived from multiple myotomes

53
Q

flexion of the hip

A

bringing knee closer to chest

54
Q

extension of the hip

A

bringing knee further from chest

55
Q

abduction of the hip

A

moving leg away from midline

56
Q

adduction of the hip

A

moving leg towards the midline

57
Q

ventral rami of spinal nerves carry:

A

somatic sensory
somatic motor
sympathetics to skin

NO PARASYMPATHETICS

58
Q

nerves of the lumbar trunk are supplied by:

A

ventral rami of spinal nerves

59
Q

L1 passes _____ psoas major

60
Q

T12=

A

subcostal nerve

61
Q

subcostal nerve contains

A

somatic motor, somatic sensory & sympathetics

62
Q

L1=

A

iliohypogastric nerve
ilioinguinal nerve

63
Q

iliohypogastric nerve contains

A

somatic motor, somatic sensory & sympathetics

64
Q

ilioinguinal nerve contains

A

somatic motor, somatic sensory & sympathetics

65
Q

L1-2=

A

genitofemoral nerve

66
Q

genitofemoral nerve contains

A

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

67
Q

L2-3=

A

lateral femoral cutaneous nerve

68
Q

lateral femoral cutaneous nerve contains

A

somatic sensory ONLY

69
Q

L2-4=

A

femoral nerve & obturator nerve

70
Q

femoral nerve contains

A

somatic motor, somatic sensory & sympathetics

71
Q

femoral nerve action

A

allows for hip flexion and knee extension

72
Q

obturator nerve contains

A

somatic motor, somatic sensory & sympathetics

73
Q

obturator nerve action

A

innervates thigh adductors

74
Q

L4-5=

A

lumbosacral trunk

75
Q

lumbosacral trunk

A

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

76
Q

miliary tuberculosis of the spine

A

pellets of pus invade spine

77
Q

what nerve is this?

A

obturator nerve

78
Q

what structure is this?

A

lumbosacral trunk

79
Q

what structure is this?

A

sympathetic trunk

80
Q

what nerve is this?

A

femoral nerve

81
Q

what nerve is this?

A

genitofemoral nerve

82
Q

what nerve is this?

A

lateral femoral cutaneous nerve

83
Q

what nerve is this?

A

ilioinguinal nerve

84
Q

what nerve is this?

A

iliohypogastric nerve

85
Q

what nerve is this?

A

subcostal nerve

86
Q

what structure is this?

A

abdominal wall

87
Q

what structure is this?

A

quadratus lumborum

88
Q

what structure is this?

A

psoas major

89
Q

what nerve supplies this region?

A

subcostal nerve

90
Q

what nerve supplies this region?

A

ilioinguinal

91
Q

what nerve supplies this region?

A

genitofemoral nerve

92
Q

what nerve supplies this region?

A

lateral femoral cutaneous nerve

93
Q

what nerve supplies this region?

A

femoral nerve

94
Q

what nerve supplies this region?

A

obturator nerve

Anatomy Exam 3 (7 decks)

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