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THE CIRCULATORY SYSTEM

VEINS

THIN AND HAS LESS MUSCLE THAN A ARTERIES

BRANCH INTO VENULES

MUSCLE CONTRACTIONS MOVE BLOOD TO THE HEART

BLOOD

PLASMA(LIQUID)

RED BLOD CELLS(RBCS)

MADE IN BONE MARROW. LIVE FOR ABOUT 3 OR 4 MONTHS.

WHITE BLOOD CELLS(WBCS)

TYPES OF BLOOD

TYPE A. TYPE B. TYPE AB. TYPE O. UNIVERSAL RECIPIENT. UNIVERSAL DONOR.

VENTRICLES

RIGHT VENTRICLE SENDS DEOXYGENATED BLOOD TO THE LUNGS. LEFT VENTRICLE SENDS OXYGENATED BLOOD TO THE LUNGS.

THE HEART

SEPTUM SEPERATES THE RIGHT AND LEFT SIDES OF THE HART PREVENTING BLOOD FROM MIXING. MADE OF CARDIAC MUSCLE. AORTA TAKES BLOOD FROM THE HEART AND SPREADS IT THROUGHOUT THE BODY. PULMONARY ARTERY TAKE BLOOD FROM THE HEART TO THE LUNGS. PULMONARY VEIN TAKES BLOOD FROM THE LUNGS TO THE HEART. VENA CAVA IS THE LARGEST VEIN. RIGHT SIDE GETS DEOXYGENATED BLOOD FROM THE BODY. LEFT SIDE GETS OXYGENATED BLOOD FROM THE BODY.

CAPILLARIES

ONLY ONE CELL THICK!!!!. EXCHANGE GASES.

TYPES OF CIRCULATION

PULMONARY, CORONARY AND SYSTEMIC. PULMONARY: HEART AND LUNGS. CORONARY: SUPPLIES BLOOD TO THE HEART TISSUE. SYSTEMIC: HEART AND BODY.

ARTERIES

THICK/MUSCULAR. HAS A PULSE. BRANCH INTO ARTERIOLES.