Module 1: Structure and Function of Cardiovascular System

Closed Loop Circulation: blood is cycled and does not leave

• Galilei: blood circulates in a closed system

• Harvey: systole and diastole

• Shakespeare knew functions of the system

  • O2 transport

  • CO2 + waste removal

  • nutrients, hormones, fluid exchange

4 Cardiac Chambers:

• left ventricle, right ventricle, left atrium, right atrium

Pulmonary Circulation (lower pressure)

• takes deoxygenated blood from the heart to the LUNGS

• oxygenated blood from lungs goes to tissue

• low pressure because lungs are delicate

Systemic Circulation (higher pressure)

• oxygenated blood from heart to body’s organs and TISSUES

• deoxygenated blood from goes back to the heart

• high pressure bc it requires a lot of force to pump the blood