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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
Posterior abdominal wall muscles
psoas major, quadratus lumborum, psoas minor, illiacus
26
Iliacus origin
iliac fossa
27
Illiacus insertion
lesser trochanter
28
Illiacus Action
flexion & ER of hip
29
Psoas Major Origin
Transverse processes T12-L5
30
Psoas Major Insertion
Lesser trochanter
31
Psoas Major action
flexion of the hip
32
Psoas Minor Origin
Lateral aspect of T12&L1
33
Psoas Minor insertion
iliopectineal line
34
Psoas minor action
trunk flexion
35
Quadratus Lumborum origin
iliac crest
36
Quadratus Lumborum insertion
transverse processes of T1-L5, rib 12
37
Quadratus Lumborum Action
Bilateral: extention of trunk Unilateral: lateral flexion of trunk
38
Inguinal Ligament
attaches ASIS to pubis
39
Inguinal Ligament Function
-Anchors abdominal muscle -Supports soft tissues of the groin
40
Inguinal Canal location
-lower anterior abdominal wall -extends from deep inguinal ring -> superficial inguinal ring
41
Superficial inguinal ring
opening in EO aponeurosis *termination of inguinal canal
42
Deep inguinal ring
evagination in transveralis fascia
43
anterior border of inguinal canal
EO aponeurosis
44
Posterior border of inguinal canal
transversalis fascia
45
Floor of inguinal canal
inguinal ligament
46
roof of inguinal canal
fibers of transversus abdominis & IO
47
Inguinal canal contents in MALES
-spermatic cord -gonadal vessels (testicular a&v) -ilioinguinal nerve -lymphatics
48
Inguinal canal contents in FEMALES
-round ligament of uterus -ilioinguinal nerve -lymphatics
49
Sensory innervation of abdominal wall
dermatomes
50
Motor innervation of the abdominal wall
-thorcoabdominal nerves -subcostal nerve -lumbar plexus
51
Dermatomes
-cutaneous innervation -arranged in inferiorly sloping parallel rows around the abdomen -clinically relevant dermatomes: T10, L1
52
T10 dermatome
umbilical
53
L1 dermatome
inguinal
54
Motor innervation to abdominal muscles
-Thoracoabdominal nerves (T7-T11) -Subcostal nerve (T12) -Lumbar plexus (L1)
55
Lumbar plexus nerves in motor innervation to abdominal muscles
-Iliohypogastric -Ilioinguinal
56
Location of lumbar plexus
-posterir abdominal wall -Lumbar spinal nerves L1-L4 -innervation mainly to lower limb
57
superficial lymphatic drainage
drains cutaneous and subcutaneous structures
58
what structure above umbilicus does superficual lymph drainage drain
axillary node
59
what structure below umbilicus does superficual lymph drainage drain
superficial inguinal nodes
60
Deep lymph drainage below the umbilicus
1. superficial inguinal nodes 2. deep inguinal nodes 3. common iliac nodes 4. lumbar nodes all drains into Cisterna Chyli
61
Lymph drainage return to venous circulation of left and right abdomen BELOW umbilicus
Cisterna Chyli -> Axillary nodes (left) -> Thoracic duct which returns lymph to venous system
62
Lymph drainage return to venous circulation right abdomen ABOVE umbilicus
Axillary nodes (right) -> Right Lymphatic duct which returns lymph to venous system
63

Year 2 - Semester 2 ANAT 316 (21 decks)

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