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Anatomy > Abdominal Wall > Flashcards

Abdominal Wall Flashcards

1
Q

Anteroabdominal wall layers

A 
Skin
Superficial fatty fascia - camper’s fascia
Deep membranous scarpa’s fascia
Potential space
Muscular laters with investing fascia
Endoabdominal / transversalis fascia 
Extraperitoneal fat
Parietal peritoneum
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2
Q

External obliques

Funciton

A

Bilaterally flex trunk
Compress abdominal
Unilaterally - ipsilateral bending
Contralateral rotation

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3
Q

External obliques

Innervation

A

Thoracoabdominal nerve

Subcoastal nerve

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4
Q

Internal oblique function

A

Bilaterally flex trunk
Compress abdomen
Unilaterally bend and rotate ipsilateral

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5
Q

Internal oblique innervation

A

Thoracoabdomino n
Subcostal n
Iliohypogastric n
Ilioinguinal n

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6
Q

Transverse abdominals

Funciton

A

Bilaterally compress abd

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7
Q

Transverse abdominis innervation

A

Thoracoabdominal n
Subcostal n
Iliohypogastric n
Ilioinguinal n

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8
Q

Inguinal region contains

A 
EO aponeurosis (inguinal ligament)
ASIS to pubic tubercle 
Lacunae ligament
IO and TA > conjoint tendon
TA FIBERS DONT CONTRIBUTE
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9
Q

Rectus abdominis function

A

Flexes lumbar trunk

Compresses abdominis

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10
Q

Rectus abdominis innervation

A

Thoracoabdominal n

Subcostal n

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11
Q

Above accurate line anterior

A

EO aponeurosis and 1/2 IO aponeurosis

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12
Q

Above accurate line posteriorly

A

TA aponeurosis and 1/2 IO aponeurosis

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13
Q

Below arcuate line anterior

A

All 3 aponeurosis pass anterior to rectus abdominis

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14
Q

Below arcuate line posterior

A

Only endoabdominal/ transversalis fascia and parietal peritoneum

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15
Q

Falciform ligament

A

Between liver and superior wall

Round ligament and paraumbilical veins

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16
Q

Lateral umbilical fold

A

Inferior epigastric artey

17
Q

Medial umbilical fold

A

Medial umbilical ligaments

Obliterated umbilical artery

18
Q

Median umbilical fold

A

Medial umbilical ligament

Urachus - remnant of allantois

19
Q

Urachus

A

Remnant of allantois

20
Q

Innervation of anterior abdominal wall

A

Motor and cutaneous innervation by ventral rami of spinal nerves t6-t12.
Thoracoabdominal
Subcostal
Lumbar plexus

21
Q

Thoracoabdominal nerve

A

T6-t11
Continuation of intercostal inferior to costal margin
Course in neurovasculare space (IO and TA)
Supplies all muscles of anterolateral wall and skin to umbilicus

22
Q

Subcostal nerve

A

T12
Passes below rib 12.
Penetrates TA and IO
All muscles of anterolateral abdominal wall
Anterolateral skin - iliac crest to umbilicus

23
Q

Lumbar plexus

A

L1-l4
Iliohypogastric
Ilioinguinal
Genitofemoral

24
Q

Iliohypogastric

A

L1
Skin over inguinal region
Superolateral thigh
IO and TA muscles

25
Q

Ilioinguinal

A

L1
Skin superiomedial thigh
Skin of scrotum/labia
IO and TA muscles

26
Q

Genitofemoral n

A

L1 l2
Skin over femoral triangle
Cremaster in males
Mons pubis nad labia females

27
Q

Arterial supply

A

Internal thoracic a
External iliac a
Femoral a
Freely anastomose b/c no bony structures

28
Q

Internal thoracic aa splits

A

Superior epigastric aa

Musculophrenic aa

29
Q

External iliac aa splits

A

Inferior epigastric aa

Deep circumflex aa

30
Q

Femoral aa spilts

A

Superficial circumflex iliac aa

Superficial epigastric aa

31
Q

Superficial venous drainage superiormedially

A

Internal thoracic vein

32
Q

Superficial venous drainage laterally

A

Lateral thoracic vein

33
Q

Superficial venous drainage inferiority

A

Superficial and inferior epigastric v

34
Q

Lymphatic drainage cut off line

A

Transumbilical plane t10

35
Q

Lymphatic drainage above transumbilical plane

A

Superior to axillary

36
Q

Lymphatic drainage below transumbilical plane

A

Inferior to inguinal.

Anatomy (12 decks)

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