venous circulatory system Flashcards
what provides resistance to blood flow and governs the pressure in the arterial tree (2 names) also known as resistance vessels
arterioles and precapillary sphincters
what collects blood from the capillary beds
venules
whats the name of the paired veins that often accompany arteries
vena combatants
whats the avg total blood volume of an adult
5L
most common blood cell
erythrocyte AKA RBC
second most common blood cell
leukocytes (WBC)
what blood cell is involved in wound repair/clotting
platelets
what system is considered low pressure and high volume
venous system
single layer of endothelial cells
tunica intima
thick layer of smooth muscle cells and collagen fibers
tunica media
fibrous layer surrounding elastic tissue
tunica adventitia
a network of tiny vessels supplying walls of large veins and arteries with nutrients and oxygen
vasa vasorum
whats the SVC formed by
junction of right and left brachiocephalic veins (innominate)
what forms the brachiocephalic veins
junction of internal jug and subclavian
what drains the superficial areas of face and scalp
external jugs
what drains cervical vertebra
vertebral
interconnected chambers that lie between dura mater. Not true veins but drain into IJV
dural sinuses
thick walled venous reservoirs within soleal muscle. do not contain valves and are a frequent site of thrombosis
soleal sinuses
t/f superficial veins do not have a correstponding artery
true
which system is the primary route of venous drainage for upper extremeties
superficial system
what veins form the innominate vein
basilic and brachial
what forms brachial vein
ulnar radial
what forms the subclavian vein
cephalic vein and axillary vein
what forms axillary vein
basilic and brachial vein
3 upper deep veins
subclavian
axillary
brachial
3 upper superficial veins
cephalic
basilic
median cubital
perforator in medial thigb
dodds
medial calf perforator
boyds
medial lower third of calf perforators
cocketts
