Axilla Flashcards
(27 cards)
Insertion of the serratus anterior?
medial border of the scapula
Origin of the serratus anterior?
ribs 1-8
Innervation of the serratus anterior?
thoracic artery and thoracic nerve
Function of the serratus anterior?
scapular protraction
What happens when thoracic nerve is injured?
paralysis of serratus anterior (scapular winging)
What two structures prevent scapular winging?
trapezius and scapula
what is the origin of the axillary artery?
Subclavian artery
what does the axillary artery turn into?
brachial artery
what three regions seperate the axillary nerve?
rib to medial border of pec minor, under pec minor, past lateral border
How many branches does each region give off?
region 1–> 1
region 2–> 2
region 3–>3
what artery is within 1st region?
superior thoracic artery
what does the superior thoracic artery supply?
superior part of the pect (
what is common in region 1?
aneurism resulting in pain and parasthesia
What branches are within the second region?
thoracoacromial trunk (clavicular, acromial, delotid), and lateral thoracic artery
what does the deltoid artery supply?
pec major and delotids
what does the lateral thoracic artery supply?
serratus anterior, intercostals, lateral pec major
what branches are part of region 3?
subscapular artery, anterior humeral circumfelx, posterior circumflex
how would artery and vein compression present for axillary?
normal at anatomical and impeded when subject is abducting there arm
which is more anterior? artery or vein?
vein are more anterior (superficial) would be less of a problem to hurt a vein
what do lymphnodes do?
drain lymph from upper veins
what is erb-duchenne palsy?
tearing of the upper roots (C5,C6), loss of scapular retraction, waiters tip
what is klumpkes palsy?
tearing of lower roots (C8.T1).
how does klumpkes pasly occur?
forceful abduction
how does klumpkes palsy present?
claw hand
