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CIRCULATORY SYSTEM

CIRCULATORY SYSTEM. Circulatory system transports nutrients , oxigen and residues around the body. BLOOD. BLOOD VESSELS. HEART. BLOOD. PLASMA . Which is water with different substances dissolved in it . BLOOD CELLS : RED BLOOD CELLS . Transport oxigen . WHITE BLOOD CELLS

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CIRCULATORY SYSTEM

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  1. CIRCULATORY SYSTEM Circulatorysystemtransportsnutrients, oxigen and residuesaroundthebody

  2. BLOOD BLOOD VESSELS HEART

  3. BLOOD • PLASMA. Whichiswaterwithdifferentsubstancesdissolved in it. • BLOOD CELLS: • RED BLOOD CELLS. Transportoxigen. WHITE BLOOD CELLS Defendusfrominfections • PLATELETS Block ourwounds.

  4. BLOOD VESSELS • ARTERIES. • Transportthebloodfromthehearttothebody. • Theirwalls are thick and havemuscles. • VEINS • Transportthebloodfromthebodytotheheart • Theirwalls are thin and theyhavevalvesinside • CAPILLARIES • Connecttheveins and arteries and reachallthecells in ourbody. • They are verysmallvessels.

  5. THE BLOOD VESSELS

  6. THE HEART • Itis a pumpmadeby a specialkind of musclefibres , calledcardiacmuscles . • Itisdividedintotwoinconnectedparts: theright and theleft. • Eachpartisalsodividedintotwoparts: • Theupperpartistheauricleoratrium • Thelowerpartistheventricle • Bothparts are connectedby a valve

  7. THE HEART

  8. BLOOD CIRCULATION • Theblood can travel round bytwocirculations. • Pulmonarycirculation • Sistemiccirculation • Video aboutbloodcirculation

  9. 3.Fromthelungs, thepulmonaryveinsreturntheoxygen-richbloodtotheheart, whereitenterstheleftauricule. 1. Blood with carbon dioxide (oxygen-depleted blood), nutrients and waste substances from the heart, enters through the vena cava into the right ventricle. 2.Thebloodispumpedthroughthepulmonaryarteriestothelungswhereitisoxygenated. Thepulmanorycirculation Carbondioxide-richblood Oxygen-richblood Lungs Pulmonary vein Pulmonary vein Pulmonary artery Vena cava Left auricle Right auricle Right ventricle Left ventricle

  10. 1.Oxygen-richbloodfromtheleftventricleispumpedoutviathe aorta and intotherest of thebody. 2.Thearteriesbranchoutintocapillariesthattransporttheoxygen and thenutrientstothecells of thebody. 3.Theoxygen-depletedbloodflows back totheheartthroughthe vena cavae: thepulmonarycirculationstartsagain. Thesistemic circulation Carbondioxide-richblood Oxygen-rich blood Vena cava Aorta Left auricle Right auricle Left ventricle Right ventricle

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