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Histology- Circulatory System
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Histology- Circulatory System

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Histology- Circulatory System Histology- Circulatory System Presentation Transcript

  • CirculatorySystem
  • Circulatory system THE SYSTEM OF OUR BODY RESPONSIBLE FOR TRANSPORT OF NUTRIENTS, ELIMINATION OF METABOLIC WASTES AS WELL AS REGULATION OF BODY TEMPERATURE. DIVIDED INTO: BLOOD VASCULAR SYSTEM LYMPH VASCULAR SYSTEM
  • BLOOD VASCULAR SYSTEM: COMPRISES A CIRCUIT OF VESSSELS THROUGH WHICH BLOOD FLOW IS INITIATED BY THE CONTINOUS ACTION OF A CENTRAL MUSCULAR PUMP CONSIST OF THE FF. HEART ARTERIAL SYSTEM VENOUS SYSTEM CAPILLIARIESBack
  • Lymph VASCULAR system: IS A NETWORK OF DRAINAGE VESSES FoR RETURNING EXCESS EXTRA-VASCULAR FLUID TO THE BLOOD CIRCULATORY SYSTEM CONSIST OF THE FF. LYMPH VALVE LYMPH vessels
  • HEART THE MUSCULAR ORGAN RESPONSIBLE OF PUMPING BLOOD THROUGHOUT OUR BODY
  • HEART Purkinje fibers • Relays cardiac impulses to the ventricular cells causing the ventricles to contract.
  • VENTRICLE WALL • Right ventricle: Receives blood from the right atrium and pumps it to the main pulmonary artery. • Left ventricle: Receives blood from the left atrium and pumps it to the aorta.
  • Heart valve control the flow of blood through the heart by opening and closing during the contractions of the heart.
  • EPICARDIUM Consist of dense sheet of fibrocollagenous tissue, the other surface is formed with flat mesothelial cells. consist of large ranch of coronary artery with smaller branch penetrating the myocardium
  • MYOCARDIUM Consist of cardiac muscle fibres which forms the intercalated discs.
  • endocardium It has a surface layer of flattened endothelial cells supported by a fibrous layer containing variable amounts of elastic fibres. Part of the heart where purkinje fibres can be seen Back
  • Elastic arteries Largest single blood vessel in the body. This vessel carries oxygen-rich blood from the left ventricle to the various parts of the body.
  • arterioles type of vessels in the arterial system which serves as the terminal branches of the arterial tree, supplying the capillary bedsBack
  • capillaries Extremely thin-walled vessels forming an interconnected network in which microcirculation mainly occurs.Slide 3 Back
  • muscular venules Characterized by a clearly defined intimal layer devoid of elastic fibres and a tunica media consisting of one or two layers of smooth muscle fibers.
  • vein with valve The valve consist of delicate semilunar projections of the tunica intima of the vein wall.
  • small vein Characterised by a thicker muscular wall and a poorly developed internal elastic lamina.
  • medium size vein In veins the tunica media is thinner compared to an artery, usually in veins, tunica adventitia is the thickest layer of the vessel wall.
  • large muscular vein It has a very narrow tunica intima, but the media is more substantial , consisting of several layers of smooth muscle, separated by collagenous connective and scanty elastic tissues. The tunica adventitia is broad and composed of collagen, contains numerous vasa vasorum . Elastic fibres are prominent at the junction bet. Media and adventitia.
  • inferior vena cava one of the two main veins bringing de- oxygenated blood from the body to the heart. Back
  • lymph valve SUPPORTING TISSUE ARE MOSTLY CONSIST MERELY OF RETICULI FIBRES AND A LITTLE GROUND SUBSTANCE.
  • lymph vessels SHOWS SMALL LYMPHATIC VESSELS CONTAINING A VERY SMALL AMOUNT OF SMOOTH MUSCLE IN THEIR WALLS.
  • AssignmentInterview a person fromyour neighbour who issuffering from hypertensionand ask him/her abouttheir usual diet.