Abdominal Wall Flashcards

1
Q

Rectus abdominis Innervation

A

Abdominal portion of intercostal nerves T6-T12

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2
Q

Rectus abdominis Function

A

Flexes trunk, compresses abdomen, stabilizes pelvis

Notes: Surrounded by rectus sheath

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3
Q

External oblique Innervation

A

Abdominal portion of intercostal nerves T7-T11

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4
Q

External oblique

A

Unilateral: flexes trunk to same side, rotates trunk to opposite side. Bilateral: Flexes trunk, compresses and supports abdominal cavity

Notes: Tendon forms superficial most part of rectus sheath, split in external oblique forms superficial inguinal ring

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5
Q

Internal oblique Innervation

A

Abdominal portion of intercostal nerves T6-T12

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6
Q

Internal oblique Innervation

A

Abdominal portion of intercostal nerves T6-T12

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7
Q

Internal oblique Function

A

Unilateral: flexes trunk to same side, rotates trunk to opposite side. Bilateral: Flexes trunk, compresses and supports abdominal cavity

Notes: Forms second deepest layer of rectus sheath. Superior to arcuate line the fascia splits to both superficial and deep surfaces of rectus abdominis

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8
Q

Transversus abdominis Innervation

A

Abdominal portion of intercostal nerves T6-T12

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9
Q

Transversus abdominis Function

A

Unilateral: rotates trunk to same side. Bilateral: Compresses and supports abdominal cavity

Notes: Forms deepest layer of rectus sheath-superior to arcuate line it lies deep to rectus abdominis

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10
Q

Diaphragm Innervation

A

Phrenic nerve; most peripheral sections via intercostal nerves

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11
Q

Diaphragm Function

A

Depresses to enable inspiration (inhaling air)

Notes: Multiple openings in muscle-opening for inferior vena cava at level of T8; opening for esophagus at T10; opening for aorta at T12. Mnemonic: I8 10Eggs At12

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12
Q

Iliacus Function

A

Flexes the thigh at hip

Notes: Forms common iliopsoas tendon

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13
Q

Psoas major Function

A

Flexes the thigh at hip

Notes: Forms common iliopsoas tendon, sometimes a separate belly called the psoas minor is present

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14
Q

Iliacus Innervation

A

Femoral nerve

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15
Q

Psoas major Innervation

A

Anterior rami of spinal nerves L1-L3

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