Nerves of Anterior Abdominal Wall (Anatomy of the Abdomen)

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Nerves of Anterior Abdominal Wall

(Page 30)

Nerves of Anterior abdominal Wall

Thoraco-abdominal nerves (T7-T11)

Subcostal n.

Ilio-hypogastric n.

Ilio-inguinal n.

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Ext abdominal oblique m.

Internal abdominal oblique m.

Transversus abdominis

Thoracoabdominal n.

Lateral cutaneous n

Rectus Abdominis

Anterior cutaneous n

Course of Thoraco-abdominal nerves

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Subcostal n.

Psoas major m.

Ilio-hypogastric n.

Ilio-inguinal n.

Quadratus lumborum m

Transversus abdominis

Lateral cutaneous n. of thighFemoral n.

Course of subcostal, iliohypogastric & ilioinguinal nerves

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Ilio-hypogastric n.

Ilio-inguinal n.

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External abdominal oblique.

Internal abdominal oblique

Ilio-hypogastric n

Ilio-inguinal n

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Cutaneous nerves

Thoraco-abdominal nerves (T7-T11)

Subcostal n.

Ilio-hypogastric n.

Ilio-inguinal n.

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Rectus SheathRectus Sheath(Page 17)(Page 17)

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Dr. Sherif Fahmy

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ContentsContents

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Lateral head

Medial head

Pyramidalis m.

Tendinous intersections

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The Groin (Inguinal Region)

(Page 35)

Inguinal Ligament

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Inguinal (Poupart’s) Inguinal (Poupart’s) LigamentLigament(Page 35)(Page 35)

Pubic tubercle

.A.S.I.S

Pectineal lig

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Inguinal Canal(Page 37)

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Inguinal (Hasselbach’s)

Triangle

Inferior epigastric vs.

Lateral margin of rectus abdominis m.

Inguinal lig.

Inner aspect of anterior abdominal wall

HerniaExternal:1- Inguinal (direct & indirect).2- Femoral hernia.3- Umbilical hernia.4- Other abdominal hernia.Internal:1- Diaphragmatic hernia.2- Hernia in lesser sac.

External Hernia1- Inguinal (indirect & direct).2- Femoral hernia.3- Umbilical hernia (congenital, infantile and adult paraumbilical).4- Others (lumbar hernias, incisional and obturator).

Internal hernias1- Lesser sac hernia.2- Duodenal recesses hernias.

Causes of Hernia1- Congenital oblique inguinal hernia.2- Weakness of abdominal wall (obesity, pregnancy, scar & nerve injury).3- Increased intra-abdominal pressure (chronic straining & Abdominal swelling).

Structure of Hernia1- Defect (internal inguinal ring).2- Sac (neck, body and fundus).3- Contents (intestine, peritoneum and organs except pancreas).4- Coverings differs according type of hernia.

Tests of Hernia1- Internal ring test.2- External ring test.

Oblique inguinal hernia

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Direct inguinal hernia

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Dr. Sherif Fahmy

Oblique inguinal hernia.

Femoral hernia

Umbilical hernia

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Dr. Sherif Fahmy