Blood Supply to the Head, Neck and Limbs - S2P7 Flashcards
deck complete
what arteries supply the head and neck
left and right common carotid arteries
what structures lie within the carotid sheath
common carotid artery
internal jugular vein
vagus nerve
sympathetic plexus
what does the common carotid a. bifurcate into
internal carotid a.
external carotid a.
what is the carotid sinus
a dilation at the base of the internal carotid a.
contains chemoreceptors and baroreceptors for the brain
what is the carotid body
a chemoreceptor located in the adventitia of the bifurcation of the common carotid a.
what does the internal carotid a. supply
the brain
what does the external carotid a. supply
the face, head and neck
what are the branches of the external carotid a.
lingual artery
facial artery
maxillary artery
middle meningeal artery
where does the facial artery lie
musculature of the face
remains superficial
anterior to masseter
how to find lingual artery
find facial a. first. track back, lingual a. sits just below
what does the meningeal a. supply
meninges of the brain
easily ruptures by head trauma on lateral side
what forms the circle of willis/cerebral arterial circle
internal carotid arteries merge after carotid canals
branches of the internal carotid a.
ophthalmic a.
vertebral a.
basilar a.
venous drainage of the head and neck
dural venous sinuses
internal jugular v.
drainage area
external jugular v.
drainage into SCV
features of internal jugular v.
majority drainage of brain
runs alongside common carotid a.
features of external jugular v.
majority of facial drainage
much smaller than IJV
parts of the axillary artery
first second and third
first part of axillary a.
before pectoralis minor
1 main branch
second part of axillary a.
under pectoralis minor
2 main branches
third part of axillary a.
distal to pectoralis minor
3 main branches
where does the axillary a. become the brachial a.
once clear of scapular musculature - inferior border of teres major
what main branch comes from the brachial artery
profunda brachii
where does the brachial artery bifurcate
after passing under bicipital aponeurosis
what does the brachial a. bifurcate into
radial and ulnar arteries
what are the most major branches of the radial and ulnar arteries
interosseous arteries
deep venous return of the arm and forearm
essentially mirrors arterial supply
dorsal venous network
plexus on dorsal side
cephalic vein
more lateral
remains superficial until shoulder
basilic vein
only superficial until elbow then runs deep to join brachial veins
B = body. lies medially
at what level does the abdominal aorta bifurcate
L4
the iliac arteries
abdominal aorta > common iliac a. > internal and external iliac a.
what main branch comes from the femoral artery
profunda femoris a.
where does the femoral artery become the popliteal artery
popliteal fossa
what does the popliteal artery become
posterior tibial a.
what does the posterior tibial a. give rise to
lateral and medial plantar arteries
what do the plantar arteries supply
medial - big toe
lateral - other toes
deep venous return of the lower limb
plantar veins > posterior tibial v. > anterior tibial v. > popliteal v. > femoral v. > external iliac v. > etc
superficial venous return of the lower limb
dorsal venous arch > small saphenous v. > popliteal fossa > great saphenous v. > femoral triangle
