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Anatomy Lab > Abdominal Muscles > Flashcards

Abdominal Muscles Flashcards

1
Q

Rectus abdominus origin

A

Pubic symphysis & pubic crest

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2
Q

Rectus abdominus insertion

A

Xiphoid process, costal cartilages 5-7

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3
Q

Rectus abdominus action

A

Flexes trunk, compresses abdominal viscera

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4
Q

Rectus abodominus innervation

A

Ventral rami

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5
Q

Rectus abdominus blood supply

A

Superior and inferior epigastric arteries

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6
Q

Internal oblique origin

A

Thoracolumbar fascia, anterior 2/3 iliac crest, lateral half of inguinal ligament

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7
Q

Internal oblique insertion

A

Inferior border of ribs 10-12

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8
Q

Internal oblique action

A

Compresses and supports abdominal viscera, flexes and rotates trunk

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9
Q

Internal oblique innervation

A

Ventral rami of six inferior thoracic and first lumbar nerves

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10
Q

Internal oblique blood supply

A

Superior and inferior epigastric and deep circumflex iliac arteries

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11
Q

External oblique origin

A

External surfaces of ribs 5-12

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12
Q

External oblique insertion

A

Linda alba, pubic tubercle, anterior half of iliac crest

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13
Q

External oblique action

A

Flex and rotate trunk

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14
Q

External oblique innervation

A

Ventral rami of six inferior thoracic nerves

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15
Q

External oblique blood supply

A

Superior and inferior epigastric arteries

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16
Q

Quadratus lumborum origin

A

Medial half of inferior border of 12th rib, tips of lumbar transverse processes

17
Q

Quadratus lumborum insertion

A

Iliolumbar ligament, internal lip of iliac crest

18
Q

Quadratus lumborum action

A

Extends and laterally flexes vertebral column, fixes 12th rib during inspiration

19
Q

Quadratus lumborum innervation

A

Ventral rami

20
Q

Quadratus lumborum blood supply

A

Iliolumbar artery

21
Q

Psoas minor origin

A

Vertebral margins of T12-L1 vertebrae, corresponding intervertebral disk

22
Q

Psoas minor insertion

A

Pectineal line of pelvis

23
Q

Psoas minor action

A

Flexes pelvis on vertebral column

24
Q

Psoas minor innervation

A

Ventral rami of first lumbar nerve

25
Q

Psoas minor blood supply

A

Lumbar branch of Iliolumbar artery

26
Q

Psoas major origin

A

All bodies and transverse processes of all lumbar vertebrae

27
Q

Psoas major insertion

A

Lesser trochanter

28
Q

Psoas major action

A

Flex hip

29
Q

Psoas major innervation

A

Lumbar nerves 2-4

30
Q

Psoas major blood supply

A

Iliolumbar artery

31
Q

Transverse abdominus origin

A

Thoracolumbar fascia, lateral part of inguinal ligament, tips of lower 6 ribs, anterior iliac crest

32
Q

Transverse abdominus insertion

A

Aponeurosis into linea alba

33
Q

Transverse abdominus action

A

Compression of the abdominal cavity

34
Q

Transverse abdominus innervation

A

Lower intercostal nerves, L1

35
Q

Transverse abdominus blood supply

A

Posterior intercostal and subcostal arteries, superior and inferior epigastric arteries

Anatomy Lab (11 decks)

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