Functional Organization of the Cardiovascular System. Objectives. Describe the functional organization of cardiovascular system List the functions of cardiovascular system. Describe the main function of arteries, capillaries and veins
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I. Primary (main) function of the heart:
♥ Acts as a muscular pump:
in order to maintain adequate level of blood flow
throughout CVS by pumping blood under press into
♥ Responsible for the mass movement of fluid in
II. Secondary functions:
delivers O2 to tissues, & brings back CO2 to lungs.
carries absorbed digestion products to liver & tissues.
carries metabolic wastes to kidneys to be excreted.
distribution of body fluids.
Hormonal: carries hormones to target tissues to produce their effects.
Immune: carries antibodies, leukocytes (WBCs), cytokines, & complement
to aid body defense mechanism against pathogens.
Protection: carries platelets, & clotting factors to aid protection of the body
in blood clotting mechanism.
Temperature: helps in regulation of body temperature, by diverting blood to cool or warm the body.
Ventricle: the main pumping force
Rt. Ventricle Lt. ventricle
Pulmonary circulation Systemic circulation
■One way valves.
■Allow blood to flow from
atria into ventricles.
■ Tricuspid (Rt) & Mitral
♥2 semilunar valves:
■One way valves.
■At origin of pulmonary artery
■ Pulmonary (Rt) & Aortic (Lt).
■ Open during ventricular
- open by forward P by blood
- close by backward P by blood
Structure of arterial wall