The Circulatory System

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Presentation transcript:

The Circulatory System Components of Blood

The Human Heart Septum

The Human Heart Pulmonary Artery to left lung Pulmonary Artery to right lung Septum

Components of Blood Red Blood Cells (RBC): Carries O2 to all parts of the body Dark red (oxygen poor) or bright red (oxygen rich) Produced in bone marrow Disc shaped with pinched center; allows them to bend and squeeze through capillaries

Components of Blood Red Blood Cells (RBC):

Plasma: fluid portion of blood makes up 55% of blood and is a yellow colored liquid 95% of plasma is H2O

Components of Blood Plasma:

White Blood Cells (WBC): Components of Blood White Blood Cells (WBC): fight infection larger in size but fewer in number body increases production of WBC’s when needed (sick, have an infection)

Components of Blood White Blood Cells (WBC):

Platelets: Cell fragments that help blood clot at a wound site Shaped somewhat like plates Produced in bone marrow Hemophiliacs lack a sufficient number of platelets

Components of Blood Platelets:

3 Types of Blood Vessels Arteries: carry blood AWAY from the heart Veins: carry blood TO the heart Capillaries-connect arteries to veins

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