Human circulatory system

Human circulatory system

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  HUMAN CIRCULATORY SYSTEM
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  DESCRIPTION • Transport nutrientsand oxygen to allow nutrition and gas Exchange in Cells, then collect waste products and carry them to be expelled. • There are many organs associated with the circulatory system, like liver, kidneys, lungs and intestines.
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  KINDS OF BLOOD •Blood is a set of especialized cells that transport different substances throughout the body. Human circulatory system carries out two kinds of blood. • OXYGENATED BLOOD: contents oxygen and nutrients like vitamins, salts and glucose. It is bright red because hemoglobin. • DEOXYGENATED BLOOD: contents carbón dioxide and waste products from Cells nutrition process. It is dark red due to the carbón dioxide.
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  BLOOD CELLS: • Mainlyin blood it is possible to find twoe kinds of cells: 1. Red blood cells: are also called erythrocytes, they are rich in hemoglobin an iron- containing biomolecule that can bind oxygen. 2. White blood cells: are also called leucocytes and belong to the immune system. They can be classified inn neutrophils, eosinophils, basophils, lymphocytes and monocytes (macrophages). 3. Platelets: also called thrombocytes, they are a component of blood whose function is to stop bleeding by clumping and clotting blood vessel injuries. BLOOD CELLS ARE PRODUCED IN BONE MARROW
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  BLOOD PLASMA • Isa straw colored liquid that contents all blood cells in suspension., so it is the extracelular matrix of blood cells.
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  ORGANS: • HEART: Ihumans, like other mammals, heart has four cavities: 2 ventricles and two atriums. Human heart is a muscular organ made of three layer, from inner to aouter layer, they are. 1. Endocardium: Is the inner part of the heart, that forms the four heart chambers. 2. Myocardium: Is the middle muscular layer, it provides a scaffolding for the heart chambers 3. Pericardium: is a folded fibrous connective tissue layer that encompasses the entire heart and the roots of the great vessels.
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  HEART STRUCTURE • Theleft side of the heart pumps oxygenated blood to all the body. • The right side of the heart pumps deoxygenated blood to lungs for gas exchange.
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  Right side ofthe heart • Cava veins (Superior and inferior): Collect deoxygenated blood from the body and transport it to the right atrium. • Right atrium: Pumps blood to the right ventricle. • Tricuspid valve: Allows blood flowing one way from right atrium to right ventricle. • Right ventricle: Pumps blood to the lungs for gas Exchange. • Pulmonary valve: allows blood flowing one way from right ventricle to pulmonary artery. • Pulmonary Artery: Transport deoxygenated blood to the lungs.
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  Left side ofthe heart: • Pulmonary veins: Collect oxygenated blood from the lungs and transport it to the left atrium. • Left atrium: Pumps blood to the left ventricle. • Mitral valve: Allows blood flowing one way from left atrium to left ventricle. • Left ventricle: Pumps blood to the body. • Aortic valve: allows blood flowing one way from left ventricle to aorta. • Aorta: Transport oxygenated blood to the body.
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  Cardiac Movements • Systole:heart contraction • Diastole: heart relaxation.
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  Blood Vessels: • Arteries:Transport oxygenated from the heart to the body. EXCEPTION: Pulmonary artery. Its walls are bigger than veins and are made of endotelium, smooth muscles and connective tissue. • Veins: Transport deoxyganted from the body to the heart. EXCEPTION: Pulmonary Vein. They are made of endotelium, smooth muscles and connective tissue. • Capillaries: Are the connection between arteries and veins, it size is similar to a human hair and allow gass and nutrients exhange directly to cells.
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  OTHER HEARTS STRUCTURE REPTILES
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  KINDS OF CIRCULATORYSYSTEM
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  KINDS OF CIRCULATORYSYSTEM