Anterior Abdominal Wall Flashcards

1
Q

Surface landmarks

A

Linea alba
Linea semilunaris
Tendinous intersections
Inguinal ligament

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2
Q

Right upper quadrant

A

Right love
Gallbladder
Upper colon

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3
Q

Left upper quadrant

A

Spleen
Stomach
Pancreas
Left kidney

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4
Q

Right lower quadrant

A

Appendix
Right uterine tube

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5
Q

Left lower quadrant

A

Sigmoid and descending colon
Left uterine tube

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6
Q

Planes

A

Transumblical L3/L4
Subcostal
Transtubercular L5
Transpyloric L1
Supracristal L4
Interspinous S1

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7
Q

Subdivision of abdomen

A

(9)
Right and left hypochondriac
Right and left lumbar
Right and left iliac
Epigastrium
Umbilical
Hypogastrium

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8
Q

Layers of anterior abdominal wall

A

Skin
Superficial fascia
Muscles/aponeurosis/investing fascia
Transversalis fascia
Extraperitoneal fascia fascia
Parietal peritoneum

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9
Q

Langer’s Lines

A

Tension lines are important for incisions and decreasing scarring

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10
Q

Gridiron incision

A

Split muscles without cutting them
Ex. McBurney incision at McBurney point

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11
Q

McBurney point

A

Maximum tenderness site in appendicitis
1/3 from ASIS to umbilicus (2/3 from umbilicus to ASIS)
Iliohypogastric n

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12
Q

Superficial fascia

A

Above umbilicus - Camper’s fascia
Below umbilicus - Camper’s and Scarpa’s fascia

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13
Q

Abdominal muscles

A

Support and protect, posture, stabilization
EO, IO, TA, RA, P

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14
Q

External oblique

A

Hands in pocket
Aponeurosis forms anterior wall of rectus sheath, inguinal ligament

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15
Q

Internal oblique

A

Hands to chest
Perpendicular to EO

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16
Q

Transversus abdominis

A

Run horizontally

17
Q

Rectus abdominus

A

Enclosed within rectus sheath, run vertically

18
Q

Pyramidalis

A

Triangular muscles anterior to inferior part of rectus sheath

19
Q

Linea alba

A

Seperates two sides of RAs

20
Q

Linea semilunaris

A

Lateral border of RA

21
Q

Rectus sheath

A

Encloses RA
Above umbilicus/arcuate line - EO & ant IO anterior, post IO & TA posterior
Below umbilicus/arcuate line everything goes anterior except transversals fascia

22
Q

Rectus sheath contents

A

Contains rectus abdominis, pyramidalis, superior and inferior epigastric, lower five intercostal nerves, subcostal nerves

23
Q

Tendinous intersections

A

Make abs

24
Q

Arcuate line

A

Posterior layer of rectus sheath has arcuate line between umbilicus and pubic symphysis

25
Q

Internal surface of anterior abdominal wall

A

Median umbilical fold
Medial umbilical fold
Lateral umbilical fold

26
Q

Median umbilical fold

A

Apex of bladder, remnant of urachus (hindgut communication)

27
Q

Medial umbilical fold

A

Occluded umbilical arteries

28
Q

Lateral umbilical fold

A

Cover inferior epigastric vessels

29
Q

Hesselbach’s triangle

A

Landmark for hernia
Borders = lateral border of rectus abdominis, lateral umbilical fold, inguinal ligament

30
Q

Dermatomes

A

T7-T9 superior to umbilicus
T10 around umbilicus
T11-T12, L1 inferior to umbilicus

31
Q

Nerves of abdominal wall

A

Iliohypogastric and ilioinguinal nerves from lumbar plexus

32
Q

TAP block

A

Block T7-T11

33
Q

ASIS block

A

Block iliohypogastric and ilioinguinal

34
Q

Arteries of abdominal wall

A

Internal thoracic which gives of superior epigastric and musculophrenic
External iliac which gives off inferior epigastric and deep circumflex iliac
Femoral which gives off superficial epigastric, circumflex iliac and external pudendal
Aortic which gives off lower 6 post intercostal, lumbar

35
Q

Veins of abdominal wall

A

Drain from umbilicus to axillary above, femoral below umbilicus

36
Q

Lymphatic drainage of abdominal wall

A

Above - axillary, below - superficial inguinal

37
Q

ASIS

A

Anterior Superior Iliac Spine
bony prominence on pelvis, front of iliac