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MADE BY :- NARENDRA KUMARK.V.LKO CANN”T LUCKNOW
CIRCULATION includes transport of nutrients, respiratory gases,metabolic intermediates,water, heat and waste products.
MAIN PARTS OF CIRCULATORY MAIN PARTS OF CIRCULATORY SYSTEMSYSTEM
1 BLOOD 2 BLOOD VESSELS3 HEART
BLOODBLOOD Blood is liquid connective tissue containing Blood is liquid connective tissue containing
organic and inorganic substances along with organic and inorganic substances along with cellular contentscellular contents
These functions are carried by blood which is an important fluid connective
tissue and composed of
BLOOD VESSELSBLOOD VESSELSBlood vessels are the tube in which Blood vessels are the tube in which
blood flows blood flows 1.1. ArteriesArteries2.2. Veins Veins 3.3. Capillaries Capillaries
Differences between arteries and veins.Differences between arteries and veins.
ARTERYARTERYMostly oxygenated blood flowsThick and elastic walls,without valves.
VEINVEINMostly deoxygenated blood flows.Thin and less elastic walls,with valves.
Heart is divided into four chambers –the right and left atria or auricles and right and left ventricles
Blood Circulation in a Closed Blood Circulation in a Closed Circulatory SystemCirculatory System..
heart
lungs
BLOOD PRESSURE
Pressure exerted by the blood on the wall of the blood vessels in which it is present.Blood pressure in a normal person=120/80mm Hg.It is measured by an instrument called sphygmomanometer.
ENCARTA ENCYCLOPEDIA .
HUTCHINSONS ENCYCLOPEDIA
CLASS.TEACHER.COM.
N.C.E.R.T. TEXT BOOK OF CLASS IX
Pulmonary circulation
PORTAL PORTAL CIRCULATIONCIRCULATION