Block 2 Blood Vessels Flashcards
three layers of blood vessels
tunica intima, media, adventitia
working part of organ
parenchyma
capillaries, sinus capillaries, post capillary venules do not have blank
3 tunics
can you see venules and arterioles without microscope
no
adventitia is like blank
ct
media is like blank
smooth muscle
intima is like blank
epithelium
endothelium is super blank so rbc dont stick together
smooth
atherosclerosis is the narrowing of the blank of the blood vessel to become narrower due to blank
lumen, cholesterol buildup
overly sensitive blood vessels that constrict in brain and cause tissue to die
cerebrovascular vasospasm
blood becoming trapped in the tunica media resulting in blank
aneurism
elastic artery has elastic sleeve of tissue located in the blank
tunica media
elastic bv like aorta act as a second blank due to recoil
pump
tunica media of muscular artery has this many layers of smooth muscle
8-40
tunica media of arteriole has this many layers of smooth muscle
1-7
all arteries have a blank membrane but only some have blank
internal elastic, external elasti membrane
tunica media of venule has this many layers of smooth muscle
1-3
venules tend to be blank in shape and have blank layers of smooth muscle
irregular, discontinuous
small veins have media that are about as thin as blank
adventitia
this occurs when valves of vein start to fail
varicose veins
large veins have a longitudinal smooth muscle layer in the blank
tunica adventitia
alternate route to venule if the smooth muscle pinches off blood from entering capillary bed
metarteriole
a ring of cytoplams surrounds the entire lumen type of cappilary
continuous
false capillaries are aka blank capillaries and they carry more than one rbc
sinus
all capillaries in liver are blank so there is lots of exchange of larger cells like white blood cells
discontinuous
capillaries that have little holes in them
fenestrated
fenestrated capillaries can be with or without blank
diaphragm
fenestrated capillaries without diaphragms occur in blank
glomerulus of kidney
postcapillary venule is lined only by blank, is larger than a capillary, and blood cells leave system here
endothelium
key id feature of elastic artery
elastic laminae
key id feature of muscular artery
compact circular smooth muscle
key id feature of arteriole
1-7 layers of smooth muscle
key id feature true capillary
one layer (endothelium)
key id feature of sinus capillary
similar to capillary but larger
key id feature of post capillary venule
similar to capillary but much larger
key id feature of venule
1-3 discontinuous layers of smooth muscle
key id feature of small / medium size vein
loosely organized smooth muscle layer oriented in 2 directions
key id feature of large sized veins
longitudinally oriented smooth muscle in ADVENTITIA
