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Flashcards in export_abdominal wall Deck (34):
1

Verteral levels & innervation of Umbilicus

Vertebral levels L3-L4
Innervation from T10

2

Anterior abdominal cavity boundaries

Costal arch, from ribs 6-10 and xiphoid process to iliac crest and inguinal ligament (ASIS to pubic tubercles)

3

External oblique attachments

Ribs 5-12
Linea alba , pubic tubercle, anterior iliac crest

4

External oblique action

Compress and support abdominal viscera
Flex and rotate trunk

5

External oblique innervation

Thoraco-abdominal nerves (anterior rami of T7-T11) and subcostal nerves

6

Internal oblique attachments

Thoracolumbar fascia, anterior 2/3 of iliac crest, connective tissue deep to inguinal ligament
Ribs 10-12, linea alba , conjoin tendon (pubis)

7

Internal oblique action

Compress and support abdominal viscera, flex and rotate trunk

8

Internal oblique innervation

Thoraco-adbominal nerves (anterior rami of T7-T11) and L1

9

Transversus abdominus attachments

Ribs 7-12 costal cartilages, thoracolumbar fascia, iliac crest, connective tissue deep to inguinal ligament
Linea alba with aponeurosis of internal oblique, pubic crest, conjoin tendon (pubis)

10

Transversus abdominus action

Compresses ad supports abdominal viscera

11

Transversus abdominus innervation

Thoraco-abdominal nerves (anterior rami of T7-T11) and L1

12

Rectus abdominus attachments

Pubic symphysis and pubic crest
Xiphoid process and costal cartilages 5-7

13

Rectus abdominus action

Flexes trunk, compresses abdominal viscera, stabilize and controle pelvic tilt (antilordosis)

14

Rectus abdominus innervation

Thoraco-abdominal nerves (anterior rami of T7-T11) and subcostal nerve

15

Thoraco-abdominal nerves (T7-T11)

Continuation of lower intercostal nerves
Course between 2nd and 3rd layers of abdominal muscles
Innervate muscles of anterolateral wall and overlying skin

16

Subcostal nerve

From anterior ramus of T12
Courses beneath rib 12, on to subumbilical abdominal wall
Innervates muscles of anterolateral abdominal wall and overlying skin superior to iliac crest and inferior to umbilicus

17

Iliohypogastric nerve (L1)

From anterior ramus of L1
Courses through transversus abdominus muscle, branches pierce external oblique aponeurosis of internal abdominal wall
Innervates skin overlying iliac crest, upper inguinal and hypogastric regions; internal oblique and transversus abdominis

18

Ilioinguinal nerve (L1)

From anterior ramus of L1
Passes between 2nd and 3rd layer of abdominal muscles, then traverses inguinal canal
Innervates skin of scrotum or labia majus and mons pubis, and adjacent medial aspect of thigh; most inferior internal oblique and transversus abdominus

19

Musculophrenic artery origin and course

From internal thoracic artery
Descends along costal margin

20

Musculophrenic artery supply

Abdominal wall of hypochondriac region, anterolateral wall, diaphragm

21

Superior epigastric artery origin and course

Internal thoracic artery
Descends in rectus sheath deep to rectus abdominus

22

Superior epigastric artery supply

Rectus abdominus and superior part of anterolateral wall

23

Posterior intercostal artery origin and course

Aorta
Continues beyond ribs to descend in abdominal wall between internal oblique and transversus abdominus

24

Posterior intercostal artery supply

Lateral region of abdominal wall

25

Subcostal artery origin and course

Aorta
Descend in abdominal wall between internal oblique and transversus abdominus

26

Subcostal artery supply

Lateral region of abdominal wall

27

Inferior epigastric artery origin and course

External iliac artery
Runs superiorly, entering rectus sheath, deep to rectus abdominus

They pierce the rectus abdominus below the arcuate line

28

Inferior epigastric artery supply

Rectus abdominus and medial part of anterolateral abdominal wall

29

Deep circumflex iliac artery origin and course

External iliac artery
Runs on deep aspect of anterior abdominal wall, parallel to inguinal ligament

30

Deep circumflex iliac artery supply

Iliacus muscle and inferior part of anterolateral abdominal wall

31

Superficial circumflex artery origin and course

Femoral artery
Runs in superficial fascia along inguinal ligament

32

Superficial circumflex artery supply

Superficial abdominal wall of inguinal region and adjacent anterior thigh

33

Superficial epigastric artery origin and course

Femoral artery
Runs in superficial fascia towards umbilicus

34

Superficial epigastric artery supply

Subcutaneous tissue and skin over pubic and inferior umbilical region