thoracic wall Flashcards Preview

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Flashcards in thoracic wall Deck (31):
1

suprasternal notch @

T2

2

sternal angle @

T4-T5

3

xiphosternal @

T9

4

costal margin @

L3

5

thoracic outlet syndrome

symptoms involving structures in superior thoracic aperature (trachea, esophagus, vessels, and n's)

6

upper limit of thoracic cavity

suprapleural membrane

7

true ribs

upper 7, attached to sternum

8

false ribs

8-10 indirectly attached thru cartilage

9

floating ribs

11+12

10

diaphragm innervation

C345
sensory:
-central: phrenic
-peripheral: innercostal
motor: phrenic

11

external intercostal muscle mvmt

elevate ribs

12

internal intercostal mucles mvmt

depress ribs

13

ext intercostal direction

hands in pockets

14

int intercostal direction

hands in neighbors pockets, at rt angles to ext IC

15

innermost intercostal muscle action

depresses ribs

16

innermost intercostal muscles

transversus thoarcis
innermost intercostal
subcostal

17

internal thoracic A branches

superior epigastric
musculophrenic

18

sup epigastric course

goes under rectus abdominis

19

musculophrenic course

laterally and down alont the costal cartilage margin

20

ant and post IC A's do what

anastomose

21

posterior intercostal vein

drains into azygous venous system

22

ant intercostal veins

drain into internal thoracic vein

23

intercostal nerves

innervate all IC muscles
Ventral T2-T11
somatic motor
somatic sensory
sympathetic

24

subcostal nerve

ventral T12
travels in costal grooves

25

ant/post thorax mvmt

pump handle mvmt of ribs 2-6 and sternum

26

vertical dimension thorax mvmt

increased be depression and contraction of the diaphragm

27

lateral dimension thorax mvmt

increased by bucket handle mvmt of lower ribs 7-10

28

ant/post mvmt at costotransverse joint

pump handle, upper ribs, rotation

29

lateral mvmt at costotransverse joint

bucket handle, lower ribs, gliding

30

articulation of ribs and vertebrae

rib articulates with the superior facet of the same level vertebrae and the inferior facet of the vertebrae at the level above it
very little mvmt

31

VAN

runs below costal grooves of ribs between 2nd and 3rd muscle layers