intro

what is the spleen

• below the diaphragm

• store blood and filter

function of the cardiovascular system

• transport of oxygen and substrates to cells

• transport of carbon dioxide and metabolites from cells

• distribution of hormones

• defence

• haemostasis

• thermoregulation

elastic vessels

• stroke volume

• convert intermitten ejection into continuous flow

conduit and feed

conduct blood flow to organs

resistance vessels

• control arterial blood pressure

• control local blood flow

exchange vessels

• nutrient delivery to cells

• lymph formation

• removal of metabolic waste

capacitance

• control cardiac filling pressure

• reservoir of blood

relationship between blood flow pressure resistance

• blood flow directly proporioal to hydrostatic pressure gradient

• blood flow inversely proportional to peripheral resistance