Lecture 4 Vasculature of Back Shoulder Breast Flashcards
back is blank supplied because arteries supply regular intervals in a pattern along the entire vertebral column
segmentally
longitudinal arteries
vertebral ascending cervical, vertebral artery
blank back muscles get blood from unnamed arteries
intrinsic
blank back muscles get blood from additional arteries
extrinsic
most superior artery to the back
occipital artery
occipital artery supplies blank and posterior skin of the head
suboccipital triangle
blood supply to upper third of spinal cord
1 anterior spinal artery, 2 posterior spinal arteries
blank parts of the spinal cord are well supplied
cervical/lumbar enlargement
spinal cord is drained by
3 anterior spinal veins, 3 posterior spinal veins
blood supply of back outside of spinal cord is blank
segmental
boundaries of lateral cervical region
superior border of trap, clavicle, scm, prevertebral fascia (floor), investing deep fascia (roof)
SCM
sternum/clavicle, mastoid process, neck flexion/protect carotid/jugular/rotate head
innervation of scm and trap
spinal accessory
posterior belly of omohyoid
scapula, hyoid, stabilize hyoid
subclavius
hold clavicle against ribcage and protect subclavian vein and artery
scalenes
TP C2-C7, 1st/2nd rib, raise ribs/lateral neck flexion
gap between anterior and middle scalene
interscalene triangle
external jugular vein empties into
subclavian
subclavian vein passes blank the anterior scalene and gets blood from entire upper limb
in front of
subclavian artery passes blank the anterior scalene so it is better protected than vein
behind
short branch off subclavian
thyrocervical trunk
branches of thyrocervical trunk
cervicodorsal trunk, suprascapular
two branches of cervicodorsal trunk (transverse cervical)
superficial cervical a, dorsal scapular a.
superficial cervical a supplies
trap
dorsal scapular supplies
levator scap/rhomboids
continuation of subclavian a and changes name at
axillary a, first rib
when axillary a enters arm it becomes
brachial a
superior thoracic, thoracoacromial, lateral thoracic, anterior humeral circumflex, posterior humeral circumflex, subscapular are all branches off
axillary a
superior thoracic suppplies
1/2 intercostal space
thoracoacromial branches (CAPD)
clavicular, acromial, pectoral, deltoid
lateral thoracic supplies
pectoralis major/minor
posterior humeral circumflex supplies
through quadrangular space to deltoid, terest major/minor, long head of triceps
subscapular artery supplies and is the most important/largest axillary branch and branches into
circumflex scapular, thoracodorsal
thoracodorsal a supplies
lat dorsi
arrangement of multiple routes of blood in anastomesis is blank circulation
collateral
drains arm, forearm and hand
axillary vein
axillary vein becomes blank vein at first rib
subclavian
important tributary of axillary vein
cephalic vein
structures holding fat and gland tissue in place and attaches it to dermis of overlying skin in breasts
susepensory ligaments
15-20 lobes of glandular tissue
mammary glands
each lobe of glandular tissue is drained by
lactiferous duct
lactiferous duct leads to blank where milk accrues before release
lactiferous sinus
blood supply of breast
lateral thoracic, thoracoacromial, internal thoracic, posterior intercostal
blood drainage of breast
mostly axillary vein
primary lymph drainage of breast
axillary lymph nodes
responsible for breasts enlarging during pregnancy and nursing and is a site of fibrocystic disease but not cancer
axillary tail
