The Heart as a Pump: Cardiovascular Functions and Flow

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Lecture 1: The Heart as a Pump

Functions of the cardiovascular system

transport of gasses (CO2 and O2)

cell to cell communication via hormones

Transport waste

Immune cell transport

Transport nutrients

Acid/base control

Thermoregulation

Transport of heat

3 basic components of a circulatory system

Pump (Heart)

Fluid (Blood)

Tubes (Blood vessels)

How is flow/circulation produced?

Flow is driven from high pressure to low pressure

pressure= force/area

Flow is driven by a pressure gradient

Pressure=force/area

flow (F)= pressure difference between 2 areas/ resistacne to flow

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