Abdomen muscles Flashcards

1
Q

What is the origin of the rectus abdominis?

A

pubic crest, pubic symphisis

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2
Q

What is the insertion of the rectus abdominis?

A

cartilage of ribs 5-7, xyphoid process

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3
Q

What is the action and reverse muscle action of the rectus abdominis?

A

flexion of vertebral column, compression of abdomen, flexion of pelvis on vertebral column (RMA)

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4
Q

What muscle originates from pubic crest, pubic symphysis and insert to cartilage of ribs 5-7 & xyphoid process?

A

rectus abdominis

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5
Q

What is the origin of the external oblique?

A

ribs 5-12

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6
Q

What is the insertion of the external oblique?

A

iliac crest, linea alba

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7
Q

What is the action of the external oblique?

A

bilaterally: flexion of vertebral column, compression of abdomen
unilaterally: lateral flexion and rotation of vertebral column

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8
Q

What muscle originates from ribs 5-12 and insert to iliac crest & linea alba?

A

external oblique

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9
Q

What is the origin of the internal oblique?

A

iliac crest, inguinal ligament, thoracolumbar fascia

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10
Q

What is the insertion of the internal oblique?

A

cartilage of ribs 7-10, linea alba

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11
Q

What is the action of the internal oblique?

A

bilaterally: flexion of vertebral column, compression of abdomen
unilaterally: lateral flexion and rotation of vertebral column

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12
Q

What muscle originates from iliac crest, inguinal ligament, thoracolumbar fascia and insert to cartilage of ribs 7-10 & linea alba?

A

internal oblique

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13
Q

What is the origin of transverse abdominis?

A

iliac crest, inguinal ligament, lumbar fascia, cartilages of ribs 5-10

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14
Q

What is the insertion of transverse abdominis?

A

xyphoid process, linea alba, pubis

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15
Q

What is the action of transverse abdominis?

A

compression of abdomen

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16
Q

What muscle originates from iliac crest, inguinal ligament, lumbar fascia, cartilages of ribs 5-10 and insert to xyphoid process, linea alba & pubis?

A

transverse abdominis

17
Q

What is the origin of the quadratus lumborum?

A

iliac crest, iliolumbar ligament

18
Q

What is the insertion of the quadratus lumborum?

A

inferior border of rib 12 and L1-L4

19
Q

What is the action and reverse muscle action of the quadratus lumborum?

A

bilaterally: pulls 12th rib interiorly, fixes 12th rib to prevent elevation during deep inhalation, extension of lumbar portion of vertebral column
unilaterally: lateral flexion of vertebral column
RMA: elevation of hip bone

20
Q

What muscle originates from iliac crest, iliolumbar ligament and insert to inferior border of rib 12 & L1-L4?

A

quadratus lumborum