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Year 2 - Semester 2 ANAT 316 > Lecture 14: Abdominal Wall > Flashcards

Lecture 14: Abdominal Wall Flashcards

1
Q

Anterolateral abdominal wall muscles

A

-EO
-IO
-transversus abdominis

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2
Q

anterior abdonimal wall muscles

A

-rectus abdominis and sheath

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3
Q

where do the abdominal muscles converge

A

linea alba

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4
Q

EO origin

A

ribs 5-12

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5
Q

EO insertion

A

iliac crest and pubis

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6
Q

Eo action

A

Bilateral: flexion of trunk
Unilateral: contralateral rotation of trunk

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7
Q

IO origin

A

-inguinal ligament
-iliac crest
-lumbodorsal fascia

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8
Q

IO insertion

A

ribs 10-12

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9
Q

IO action

A

Bilateral: abdominal compression
Unilateral:ipsilateral rotation

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10
Q

TA Origin

A

-costal margin
-iliac crest
-inguinal ligament
-thoracolumbar fascia

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11
Q

TA insertion

A

-linea alba
-xiphoid process
-pubis symphysis

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12
Q

TA action

A

rotation and flexion of the trunk

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13
Q

RA origin

A

pubic bone

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14
Q

RA insertion

A

xiphoid process, ribs 5-7

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15
Q

RA action

A

trunk flexion, pelvic stability

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16
Q

Rectus sheath

A

surrounds RA anteriorly and posteriorly

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17
Q

what is the rectus sheath formed by

A

EO, IO, TA aponeurosis’

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18
Q

what is the arcuate line between

A

umbilicis and pubis

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19
Q

layers of rectus sheath depend on

A

locating according to arcuate line

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20
Q

Anterior Rectus Sheath above arcuate line

A

-EO aponeurosis
-1/2 IO aponeurosis
_surrounds RA muscle

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21
Q

Posterior Rectus sheath above arcuate line

A

-1/2 Io aponeurosis
-TA aponeurosis

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22
Q

transversalis fascia above arcuate line

A

deep to rectus sheath

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23
Q

anterior rectus sheath below the arcuate line

A

-EO aponeurosis
-IO aponeurosis
-TA aponeurosis

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24
Q

transversalis fascia below arcuate line

A

in direct contact with RA

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25
Q

Posterior abdominal wall muscles

A

psoas major, quadratus lumborum, psoas minor, illiacus

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26
Q

Iliacus origin

A

iliac fossa

27
Q

Illiacus insertion

A

lesser trochanter

28
Q

Illiacus Action

A

flexion & ER of hip

29
Q

Psoas Major Origin

A

Transverse processes T12-L5

30
Q

Psoas Major Insertion

A

Lesser trochanter

31
Q

Psoas Major action

A

flexion of the hip

32
Q

Psoas Minor Origin

A

Lateral aspect of T12&L1

33
Q

Psoas Minor insertion

A

iliopectineal line

34
Q

Psoas minor action

A

trunk flexion

35
Q

Quadratus Lumborum origin

A

iliac crest

36
Q

Quadratus Lumborum insertion

A

transverse processes of T1-L5, rib 12

37
Q

Quadratus Lumborum Action

A

Bilateral: extention of trunk
Unilateral: lateral flexion of trunk

38
Q

Inguinal Ligament

A

attaches ASIS to pubis

39
Q

Inguinal Ligament Function

A

-Anchors abdominal muscle
-Supports soft tissues of the groin

40
Q

Inguinal Canal location

A

-lower anterior abdominal wall
-extends from deep inguinal ring -> superficial inguinal ring

41
Q

Superficial inguinal ring

A

opening in EO aponeurosis
*termination of inguinal canal

42
Q

Deep inguinal ring

A

evagination in transveralis fascia

43
Q

anterior border of inguinal canal

A

EO aponeurosis

44
Q

Posterior border of inguinal canal

A

transversalis fascia

45
Q

Floor of inguinal canal

A

inguinal ligament

46
Q

roof of inguinal canal

A

fibers of transversus abdominis & IO

47
Q

Inguinal canal contents in MALES

A

-spermatic cord
-gonadal vessels (testicular a&v)
-ilioinguinal nerve
-lymphatics

48
Q

Inguinal canal contents in FEMALES

A

-round ligament of uterus
-ilioinguinal nerve
-lymphatics

49
Q

Sensory innervation of abdominal wall

A

dermatomes

50
Q

Motor innervation of the abdominal wall

A

-thorcoabdominal nerves
-subcostal nerve
-lumbar plexus

51
Q

Dermatomes

A

-cutaneous innervation
-arranged in inferiorly sloping parallel rows around the abdomen
-clinically relevant dermatomes: T10, L1

52
Q

T10 dermatome

53
Q

L1 dermatome

54
Q

Motor innervation to abdominal muscles

A

-Thoracoabdominal nerves (T7-T11)
-Subcostal nerve (T12)
-Lumbar plexus (L1)

55
Q

Lumbar plexus nerves in motor innervation to abdominal muscles

A

-Iliohypogastric
-Ilioinguinal

56
Q

Location of lumbar plexus

A

-posterir abdominal wall
-Lumbar spinal nerves L1-L4
-innervation mainly to lower limb

57
Q

superficial lymphatic drainage

A

drains cutaneous and subcutaneous structures

58
Q

what structure above umbilicus does superficual lymph drainage drain

A

axillary node

59
Q

what structure below umbilicus does superficual lymph drainage drain

A

superficial inguinal nodes

60
Q

Deep lymph drainage below the umbilicus

A
  1. superficial inguinal nodes
  2. deep inguinal nodes
  3. common iliac nodes
  4. lumbar nodes
    all drains into Cisterna Chyli
61
Q

Lymph drainage return to venous circulation of left and right abdomen BELOW umbilicus

A

Cisterna Chyli -> Axillary nodes (left) -> Thoracic duct which returns lymph to venous system

62
Q

Lymph drainage return to venous circulation right abdomen ABOVE umbilicus

A

Axillary nodes (right) -> Right Lymphatic duct which returns lymph to venous system

Year 2 - Semester 2 ANAT 316 (21 decks)

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