Anterior Abdominal Wall Flashcards

1
Q

what are the layers of the abdominal wall from superficial to deep

A

skin, camper’s fascia (fatty SF), scarpa’s fascia (membranous SF)
-3 layers of muscle
- transversalis fascia
- extraperitoneal fat
-parietal peritoneum

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2
Q

where does the linea alba run from

A

the xyphoid process to pubic symphsis

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3
Q

what is located in camper’s fascia/superficial fascia fatty layer

A

cutaneous veins

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4
Q

describe scarpa’s fascia/ superficial fascia membranous layer

A

extremely thin

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5
Q

where does the rectus abdominis insert

A

on costal cartilages and xiphoid processes

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6
Q

describe the fibers of the rectus abdominis

A

fibers run vertically, about 3 times as wide superiorly as inferiorly

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7
Q

where are the 4 tendinous insertions of the rectus abdominis

A

in the superifcial division of the rectus sheath

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8
Q

where is the origin of the rectus abdominic

A

pubis

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9
Q

what is a aponeurosis

A

giant flat tendon continuation of muscle fibers

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10
Q

describe the internal abdominal oblique muscle

A

fibers are not parallel muscle is fan shaped so its not a 90 degree angle between internal and external oblique muscles

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11
Q

where do transversus abdominis muscle and transversalis fascia meet

A

left and right structures meet at the linea alba

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12
Q

what is spatial relationship between the inguinal ligament and the pelvis

A

theres a gap between

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13
Q

where do external oblique muscles move in relation to skeletal muscle (superficial)

A

superior

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14
Q

where do internal oblique muscles move in relation to skeletal muscle (superficial)

A

inferior

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15
Q

where do transversus abdominis muscles move in relation to skeletal musce (superficial)

A

inferior

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16
Q

where do internal oblique muscles move in relation to skeletal muscle (deep)

A

superior

17
Q

where do transversus abdominis muscles move in relation to skeletal muscle (deep)

A

superior

18
Q

what is sensory innervation of skin over the anterior abdominal wall provided by

A

ventral rami of lower 5 intercostal nerves (T7-11), subcostal nerve (T12), and iliohypogastric/ilioinguinal nerves (L1)

19
Q

what nerves provide somatic motor innervation to the anterior abdominal wall muscles

A

the same nerves as the sensory innervation

20
Q

what are the 2 epigastric arteries

A

inferior and superior

21
Q

where are the epigastric arteries in relation to the rectus abdominis muscle

A

deep

22
Q

what drains into the axillary node

A

lymph from the skin above the umbilicus (including back and upper limb)

23
Q

what drains into superficial inguinal nodea

A

lymph from the skin below the umbilicus (including back, pelvis, perineum, and lower limb)

24
Q

what is flexion of the trunk

A

-bilateral
-bending forward

25
Q

what is lateral flexion of the trunk

A
  • unilaterla
    -bend side to side
26
Q

what is rotation of the trunk

A

-unilateral
- twist toward active side (R side muscles twist toward R side)

27
Q

what functions of the abdominal wall muscles are related to changed in intraabdominal pressure

A

-stabilization of the trunk during strenous physical effort (Valsalva’s maneuver)
- forceful expiration
-coughing or sneezing
- urination and defecation
-labor and delivery

28
Q

what are the main 2 functions of abdominal wall muscles

A

-muscle decrease abdominal cavity volume/increase intraabdominal pressure
- abdominal organs increase pressure in thorax and pelvis