Blood vessels Flashcards
where do each blood vessel carry blood
artery - away from heart
vein - towards heart
capillary - connects arteries and veins
what oxygenation does each blood vessel have
artery - oxygenated
vein - deoxygenated
capillary - both
list if each blood vessel has valves or not
artery - no
vein - yes
capillary - no
list the size of the space in each blood vessel
artery - small
vein - large
capillary - small
list the thickness of each blood vessel’s walls
artery - thick
vein - thin
capillary - very thin (only 1 cell thick)
list the pressure and speed of each blood vessel
artery - high pressure and speed
vein - low pressure and speed
capillary - low pressure and speed
list what doctors use each blood vessel for
artery - check pulse
vein - draw blood
capillary - all organs have these
list whether or not each blood vessel has elastic walls
arteries - yes
veins - no
capillaries - no
what is countercurrent heat exchange
blood from artery travels in the opposite direction to veins
if needing to cool, blood will flow in the surface vein
if needing to warm, blood will flow in the deep vein
what is vasodilation
blood vessels become wider/larger in order to increase the amount of heat that can be lost from skin and cool down your body
what is vasoconstriction
constricting blood vessels near the skin’s surface in order to reduce the amount of heat lost through skin and keep the body warm
what are the % and color for plasma, red blood cells, white blood cells, and platelets
plasma (yellow) - 55%
white blood cells and platelets (white) - 1%
red blood cells (red) - 44%
what are the functions of red blood cells, white blood cells, and platelets
red blood cells - o2 transfer
white blood cells - immune response/ pathogen destruction
platelets - blood clotting
what are the other names for red blood cells and white blood cells
red - Erythrocytes
white - leucocytes
list whether or not red blood cells, white blood cells, and platelets have a nucleus
red - no
white - yea
platelets - no