Human Blood Matta Faridkot

HUMAN HEART & ITS COMPONENTS 10/14/08

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oUdam Singh oReshpal Singh

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• Human Heart • Blood Vessels • Blood • Lymph

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• To Know the structure and working of human heart. • To know about the blood and its various components. • Some heart related diseases. 10/14/08

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• It is situated at the left side of thoracic cavity. It is a highly muscular organ which pumps the blood to all over the body. • It is triangular in shape. • It provides nourishment to the whole body and removes the waste material. 10/14/08

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• Heart is divided into 4 parts i.e. 2 auricles and 2 ventricles. • Auricles are smaller and lie above the large sized ventricles. • Auricles receives blood from various parts and ventricles pump out the blood to concerned parts.

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The vessels which carry blood to various parts and back to heart are known as blood vessels These are of 3 types: Artery Vein Capillary

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• It is the vessel which carries oxygenated blood to various parts except pulmonary artery. • It is without any valves so the blood flows freely. • Dorsal aorta is the largest artery in the body. 10/14/08

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• It is the vessel which carries deoxygenated blood to various parts except the pulmonary vein which carries oxygenated blood. • Superior and inferior vena cava are the largest veins in the body. 10/14/08

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• These are the smallest blood vessels where the arteries and veins meet • The exchange of various types of nutrition, gases and waste material between tissues and blood take place here. 10/14/08

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• Blood is the fluid connective tissue of the body. • It is red in colour due to presence of a pigment HAEMOGLOBIN. • It circulates in the whole body. 10/14/08

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Blood has following components: • Blood Plasma • Red Blood Corpuscles • White Blood Corpuscles • Blood Platelets. 10/14/08

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• It is the liquid part of blood. • It has various types of proteins which protect us from various diseases. • It is mainly made up of water and forms the major part of blood. 10/14/08 14

• These are red in colour due to presence of heamoglobin • They carry oxygen to various parts of the body and take carbon dioxide to the lungs for removal. • Their life span is of 120 days. 10/14/08

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• These are the main defenders of our body from various diseases. • They are amoeboid in shape. • Their life span is 7 days.

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• These are helpful in blood clotting. • They protect the body from excess loss of blood. • Vit K is needed for their formation. 10/14/08

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• It is the colourless fluid connective tissue. • It is secreted from lymph nodes. • It produces antibodies which protect the body from various pathogens and diseases. 10/14/08

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Heart Attack Vein Blockage Failure of Valves Blood Pressure Increase in heart size

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      

Heart is located at carries oxygenated blood. is the largest artery. protect the body from diseases. RBC carries to the tissue. Lymph is secreted from . is necessary for blood clotting.

thoracic cavity. 10/14/08

Aortic arch WBC Artery 20 oxygen lymph nodes Vit K

• Text book of Punjab School Education Board Class X. • Pictures from INTERNET.

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• We are greatly thankful to our computer teachers.

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