abdominal wall and inguinal region Flashcards Preview

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Flashcards in abdominal wall and inguinal region Deck (47):
1

xiphoid

TV10

2

transtubercular line

through iliac crest @ LV5

3

subcostal line

LV3

4

umbilicus

LV3/4

5

transpyloric plane

LV1

6

supracristal plane

LV4
stay below this for spinal tap

7

trasumbilical line

LV3/4

8

transtubercular plane

LV5

9

interspinous plane

SV1

10

anterolateral abdominal wall- bones

LV1-5
ribs 7-12
pelvic girdle

11

anterolateral abdominal wall- superficial fascia

superficial fatty later (campers fascia)
deeper membranous layer (scarpa's fascia)

12

scarpa's fascia

continuous with colles and dartos's fascia of perinerum
attaches to iliac crest, fascia lata below ingunal ligament, and pubic tubercle
the fundiform ligament is a specialization of scarps's fascia

13

deeper fascias

transversalis fascia- lines all abdominal cavity deep to m layer
suberserous fascia- loose fatty CT btwn transversalis fascia and peritoneum
extraperitonal fat
peritoneum- serous membrane lines abdominopelvic cavity

14

external abdominal oblique

outer surfaces of ribs 5-12
anterior iliac crest via external abdominal oblique aponerosis attaching to linea alba from xiphoid to pubic symphysis
flexion of vertebral column and pelvis
compression ans support of abdominal viscera, unilateral lateral flexion and rotation to opposite side
intercostals, subcostal, and iliohypogastric

15

internal abdominal oblique

thoracolumbar fasica, anterior iliac crest, lateral inguinal ligament
inferior borders of ribs 9-12 via internal abdominal oblique aponeruosis to linea alba from xiphoid to pubic symphysis
flexion of VC and pelvis, compression and support of abdominal viscera, unilateral lateral flexion and same side rotation
intercostals, subcostal, iliohypogastric, ilioinguinal
inferior fibers five rise to cremaster mm

16

transversus abdominis

inner surface ribs 7-12, thoracolumbar fascia, anterior iliac crest, lateral inguinal ligament
via aponerosis to linea alba
compression and support of abdominal viscera
intercostals, subcostal, iliohypogastric, ilioinguinal

17

rectus abdominis

pubic symphysis and pubic crest
costal cartilage 5-7, xiphoid process
flexion of VC and pelvis
ventral rami T6-T12 (intercostals, subcostal)
tendinous intersections 3-4 attachements of rectus abdominis to rectus sheath

18

pyramidalis

pubic bone, anterior to recuts abdominis
linea alba
tenses linea alba
subcostal n

19

rectus sheath- above arcuate line

internal abdominal oblique aponeruosis splits into anterior and posterior laminae
anterior layer composed external and internal abdominal oblique aponeroses
posterior layer composed of internal abdominal oblique and transverus abdominis aponeruoses

20

rectus sheath- below arcuate line

all 3 muscle aponeuoses pass anteriorly to rectus abdominis with the posterior composed only of tranversalis fascia

21

supravesical fossa

btwn median and medial umbilical folds
supravesical hernias

22

medial inguinal fossa

btwn medial and lateral umbilical folds
site of direct inguinal hernias

23

lateral inguinal fossa

lateral to umbilical fold
indirect inguinal hernias

24

dermatomes

T7-L1
T10- umbilicus
L1- iliac crest, ASIS, inguinal region, anterior scrotum/labia majora

25

thoracoabdominal and subcostal nn

T7-T12

26

iliohypogastric and ilioinguinal

L1

27

musculophrenic a

terminal brr of internal thoracic a

28

superior epigastric

terminal brr of internal thoracic a
btwn rectus abdominis and posterior layer of rectus sheath
anastomose with inferior epigastric a

29

inferior epigastric

brr of external iliac a given off medial to deep inguinal ring
ascends along anterior body wall covered with peritoneum to form the lateral umbilical fold
pierces posterior rectus sheath to anastomose with superior epigastric aa

30

superficial vv drain to

axillary v via lateral thoracic v
internal thoracic v via musculophrenic and superior epigastric vv
femoral v via superficial epigastric and superficial circumflex iliac vv
a portal-caval anastomosis exists amongst vessels around umbilicus
throacoepigastric v is a venous anatomosis btwn lateral thoracic v and the superficial epigastric v, can be bipass if IVC blocked

31

deep vv drain to

internal thoracic v via musculophrenic and superior epigastric v
external iliac v via inferior epigastric and deep circumflex iliac
IVC via lumbar vv
azygous v via posterior intercostals and subcostal vv

32

superficial lymphatics

courses with subcutanous vv
superior to transumbilical plane -> axillary and parasternal nodes
inferiro to transumbilical plane -> superficial inguinal nodes

33

deep lymphatics

course w/deep vessels
to external iliac nodes via channels ll to inferior epigastric and deep circumflex iliac
to lumbar nodes via channels ll to lumbar vessels
to parasternal nodes via channels ll to superior epigastric vessels

34

lacunar ligament

medial fibers of inguinal ligament which attach lateral to pubic tubercle, cresent shaped ligament forms medial border of femoral canal

35

pectineal ligament

lateral continuation of lacunar ligament fibers attaching to pectineal line of superior pubic ramus

36

reflected ligament

continuation of superomedial fibers of inguinal ligament which attach to linea alba

37

deep inguinal ring

entrance to inguinal canal from abdominal cavity
formed as evagination in transversis fascia
lateral to inferior epigastric arteries
direct hernias

38

superficial inguinal ring

exit from inguinal canal into scrotum/labia majora
formed from split in fibers of external abdominal oblique aponeruosis
lateral crus- attached to pubic tubercle
medial crus- attaced to pubic crest
intercural fibers

39

boundaries of inguinal canal

anterior- external oblique aponeruosis
floor- inguinal ligament
roof- internal oblique and transversus abdominis
posterior- transversalis fascia laterally, reinforced medially by conjoint tendon

40

conjoint tendon

falx inguinalis
composed of inferior most fibers of internal and transversus abdominis mm
attached to pubic bone and posterior to superficial inguinal opening

41

contents of inguinal canal- male

spermatic cors,
ilioinguinal n,
genital brr of genitofemoral n

42

contents of spermatic cord

dcutus deferens
testicular a
artery of ductus deferens
pampiniform plexus of vv
autonomic and lymp to testes

43

coverings of testes/spermatic cord

skin
dartos fascia= superficial fascia of abdominal wall
external spermatic fascia= external abdominal oblique aponeruosis
cremaster m and fascia = internal abdominal oblique m
internal spermatic fascia= transversalis fascia
tunica vaginalis- evagination of periotneum

44

contents of inguinal canal female

round ligament of uterus
ilioinguinal n
genital brr of genitofemoral n

45

canal of nuck

rare condition where tunica vaginalis fails to close in females forming a pouch which may contain a cyst

46

indirect hernia

2/3 of all inguinal hernias
more common in males on right side
congenital- failure of porximal processus vaginalis to close
occur in lateral inguinal fossa, lateral to inferior epigastirc vessels
herniates material passes through deep inguinal ring into inguinal canal
may extend into scrotum

47

direct hernia

1/3 of inguinal hernias
more common in males
acquired, caused by weakness in anterior body wall posterior to superficial inguinal ring
conjoint tendon provides natural protection against hernias
occur in medial inguinal fossa (hesselsbachs triangle) medial to inferior epigastirc vessels
do not extend into scrotum