Cardiovascular system The cardiovascular system includes heart blood
Cardiovascular system
The cardiovascular system includes heart blood vessels lymphatic vessels
The heart lies in the chest immediately behind the breastbone.
The heart consists of two chambers, left and right, separated from each other by a wall.
Each chamber is divided into upper compartment (atrium) and lower compartment (ventricle).
Valves ao rta semilunar valves – between ventricles and arteries я наия ч го р леарте the tricuspid vaive – between the right atrium and the right ventricle LA RA LV the mitral valve – between the left atrium and the left ventricle RV
To prevent blood The function of flowing thevalves wrong way. the
The circulation
The heart works as a pump. It circulates blood throughout the body.
The circulation occurs with the help of arteries and veins.
Blood vessels Arteries Veins Capillaries vessels carrying blood away from the heart vessels returning blood to the heart thin-walled vessels
The small blood circle СО₂ О₂ The large blood circle The left ventricle The right ventricle Aorta Pulmonary artery Arteries Capillaries of lungs Capillaries of organs pulmonary The superior vena cava and the interior vena cava veins The left atrium СО₂ О₂ The right atrium
Lymphatic vessels
Blood
Functions 1. Trasportation (the nutrients, oxygen are carried by the blood stream and cellular wastes are carried away by the blood stream). 2. Regulation (supply the constant inner state and temperature of the body). 3. Protection (provide the immunity and the blood clotting).
Blood is a liquid tissue containing plasma and microscopical cellular elements. Leucocytes vessel PLASMA 55% Erythrocytes Thrombocytes (platelets) 45%
Erythrocytes erythrocyte Erythrocytes are red blood cells made in the bone marrow. They are Hemoglobin is an important in transporting oxygen. important protein which helps in carrying the oxygen and carrying away hemoglobin carbon dioxide. 4. 5 – 5 million in each cubic millimeter
Leucocytes white blood cells eosinophil monocyte The cells of the immune system that are involved in protecting the body. basophil lymphocyte neutrophil 8 -10 mkm leukocytosis leukopenia From 4, 000 to 10, 000 per cubic millimeter
Thrombocytes or platelets formed in the bone marrow These cells are necessary for blood clotting. 2 -5 mkm 400, 000 per cubic millimeter
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