Blood vessels Flashcards
where do veins carry blood to
body to heart
where do arteries carry blood to
heart to body
describe veins walls
thin, less muscular,less elastic
describe arteries walls
thick, muscular, elastic
do veins have valves- why/why not
yes to prevent backflow of blood
do arteries have valves- why/why not
no valves as not needed
what is the blood pressure like in veins
low
what is the blood pressure like in arteries
high
what blood do veins usually carry- except
deoxygenated blood except pulmonary vein
what blood do arteries carry- except
oxygenated blood except pulmonary artery
do veins have a pulse
no and blood travels smoothly
do arteries have a pulse
yes and blood travels in spurts
what do capillaries do
allow diffusion of gases- exchange of oxygen and carbon dioxide
what walls do capillaries have
1 cell thick
