Posterior Abdominal Wall and Respiratory Diaphragm Flashcards Preview

GI Midterm > Posterior Abdominal Wall and Respiratory Diaphragm > Flashcards

Flashcards in Posterior Abdominal Wall and Respiratory Diaphragm Deck (44):
1

psoas major m

inn - L2,L3, L4
action - bilaterally flexes thigh at the hip, unilaterally side bends trunk to the same side

2

illiacus m

inn - femoral n
actions - plexus thigh at hip

3

pasoas minor m

inn - L1 and L2
actions - depresses 12th rib, fixes 12th rib during deep inspiration, assists with trunk extension, side-bends trunk to same side

4

quadratus lumborum m

inn - T12-L4
actions - extends and laterally flexes vertebral column, fixes rib 12 during inspiration

5

psoas syndrome

lumbosacral pain
difficultly standing up straight
pain in the contralateral gluteal region
radiation of pain down the lower extremity
may mimic herniated disk

6

respiratory diaphragm

R and L domes w/ depression (for heart) between them
when relaxed superior surface extends up as fas as 5th rib
boundaries - xiphisternal joint, costal margin, body of T 12

7

Sternal origin of central tendon

R and L muscular slits that originate on posterior surface of xiphoid

8

right crus

longer, L1-L3
forms the muscular esophageal hiatus

9

left crus

shorter, L1 & L2
more lateral

10

caval opening

T8, in central tendon
IVC, branches of the R phrenic n, lymphatic from liver

11

esophageal hiatus

T10, formed and encircled by fibers of the R crus transmits
esophagus, anterior and posterior vagal trunks esophageal branches of left gastric a.

12

aortic hiatus

T12, behid the junction of the R and L crura
aorta, thoracic duct, azygous vien

13

sternocostal hiatus

located b/w sternal and costal parts of diaphragm
weak spot with potential for herniation
superior epigastic vessels

14

Median arcuate ligament

connects the two crura anterior to the aortic hiatus
aortic hiatus

15

medial arcuate ligament

fascial thickening over the superior part of the psoas major
extends from lateral part of body of L1 or L2 to the transverse process of same vertebra
gap for psoas major m and sympathetic trunk

16

lateral arcuate ligament

fascial thickening over the superior part of the quadratus lumborum
extends from L1 transverse process to the tip of rib 12
gap for quadratus lumborum and supcostal n and vessels

17

parasternal hernias

sternocostal triangle
located b/w the sternal and costal parts of the diaphragm

18

pleuroperitoneal hernias

lumbocostal triangle
located b/w the 12th rib and diaphragm

19

congenital diaphragmatic hernia

failure of pleuroperitoneal membranes to fuse with other components of the diaphragm
respiratory distress and cyanosis in the 1st minutes or hours of life
unusually flat abdomen

20

Superior blood supply to diaphragm

pericardiacophrenic a - internal thoracic a.
musculophrenic a - internal thoracic a.
superior phrenic a - descending a.

21

Inferior blood supply to diaphragm

inferior phrenic a
right - passes posterior to IVC
left - passes posterior to esophagus

22

Motor innervation of the diaphragm

phrenic n (C3, C4, C5)
some branches run with inferior phrenic a
only motor innervation

23

Sensory innervation of the diaphragm

central portion (central tendon) - phrenic n.
Peripheral portion - intercostal n. T9-11

24

superior lymphatics to diaphragm

anterior - anterior diaphragmatic nodes - parasternal
posterior - posterior diaphragmatic nodes - mediastinal nodes

25

inferior lymphatics to diaphragm

celiac nodes
superior lumbar nodes

26

costal origin of central tendon

muscular spits that originate from deep surfaces of lower 6th ribs and interdigitate with transversus abdominis

27

lumbar origin of central tendon

arises from crura and arcuate ligaments

28

common iliac nodes

lymph from the lower limbs, perineum, and gluteal region via the inguinal nodes
drain into the aortic nodes

29

aortic (lumbar) lymphatic trunks

drainage from the lower limbs, perineum, and gluteal region via the common iliac nodes
directly - posterior abdominal wall, kidney, ureters, gonads, uterus, urine tubes
indirect - IM nodes
drains to cisterna chyli (L1 & L2)

30

visceral lymphatics

drain lymph from the digestive system and associated glands
IM nodes
lateral aortic nodes
SM nodes
Celiac nodes

31

cisterna chyli

dilation at the end of the thoracic duct
drainage from
L and R lumbar trunks
the intestinal trunk
descending thoracic lymph trunks

32

celiac lymph

liver, stomach, spleen, pancreas, uper duodenum

33

superior mesenteric lymph

lower duodenum, jejunum, ileum, colon

34

inferior mesenteric lymph

colon

35

internal iliac lymph

lower rectum to anal canal above pectinate line, bladder, vagina, prostate

36

para-aortic lymph

testes, ovaries, kidneys, uterus

37

superficial inguinal lymph

anal canal below pectinate line, most skin below umbilicus, scrotum

38

deep inguinal lymph

lower extremity

39

greater sac

accessed by incision to the ant abdominal wall

40

lesser sac

post to stomach and lesser omentum

41

supracolic compartment

stomach, liver, spleen

42

infracolic compartment

SI, ascending and descending colon
further divided by the mesentery of the SI to the R/L infracolic spaces

43

paracolic gutters

areas b/w lateral aspects of the ascending and descending colon and posterior abdominal wall
allows for free communication b/w the supracolic and infracolic compartments

44

phrenicolic ligament

prevents spread of fluid superiorly