STENCILDENT

 RETICULOENDOTHELIAL SYSTEM Reticuloendothelial system is also known as mononuclear phagocytic system FORMATION: Bone marrow ,monocyte circulate in blood for 3 days they attain maturity,ability to phagocytose gets converted to macrophage -tissue macrophage gets scattered in different body parts and collectively called "tissue-macrophage system'. FOUND IN: 1)Endothelial lining of vascular and lymph node 2)Connective tissue and some organ like spleen ,liver,lungs,lymph node etc. CLASSIFICATION: 1) FIXED RETICULOENDOTHELIAL CELLS 2)WANDERING CELL  1) FIXED RETICULOENDOTHELIAL CELLS: Location- tissue Found in : Connective tissue : serous membrane of pleura Endothelium of blood of sinusoid; liver,spleen,lymph node Reticulum; spleen,lymph node  Central nervous system :microglia Lungs: alveoli of lungs  2) WANDERING CELL: A)IN BLOOD: NEUTROPHIL MONOCYTE B)IN SOLID TISSUE  Only during emergency Connective tissue and other organs come to play  FUNCTION: 1)Role in inflammation and heali

 LIMBIC SYSTEM  Limbic comes from a latin word which means border ,the limbic system was given this name because its structures lie along a horseshoe shaped area of cortex.  It appears to be a border between cerebral cortex and subcortical structures of the diencephalon. Brain stem is known as oldest brain structure and cerebrum which is located in the upper part of the brain is considered to be the newest structure the limbic system lies between these structure . Parts of limbic system: thalamus,hypothalamus,amygdala,hippocampus. Thalamus is right above the brainstem ,egg shaped structure, like midbrain in the brainstem is a relay centre for visual,auditory and motor sensation,thalamus also acts as a relay centre . Thalamus first receives all sensory information ,processes it before it sends to higher region of the brain that deals   with sight,hearing,touch and taste. Smell is the only thing which will not get affected when thalamus gets injured as suppose if we smell a yummy dish ,

 PLATELET ( THROMBOCYTE ) THROMBOCYTE: THROMBO- CLOT,CYTE- CELL. SIZE : 2 - 4 micro meter in diameter  COLOR ;  colorless SHAPE: oval,disc shaped  Platelets are seen using specialized  stain such as leishmans stain ,on  staining   it appears bluish ,granular cytoplasm There is  NO NUCLEUS present in platelet and hence cannot be reproduced . Blood is a specialized body fluid . Blood products : white blood cells , red blood cells ,plasma ,platelet. WHITE BLOOD CELLS : colorless  ,nucleated cell,plays an important role in defense mechanism of body. white blood cell include : neutrophil,eosinophil,basophil,lymphocyte and monocyte . normal white blood cell count : 4,000 to 11,000 cells per milli meter cube . RED BLOOD CELLS:  Red blood cell develop from erythrocyte ,derived from progenitor cells. Normal hemoglobin level in blood :   A dult male - 15 to 18 gram per deci litre  Adult female - 11.5-13 gram per deci litre  N ewborn - 15 gram per deci litre   3 month old : 9 gram per deci li

                        "   BODY FLUIDS COMPOSITION"  Terms to know : ICF   ECF PLASMA  Average body water in female is 50%,male 60% body fluid composition is of 2 forms INTER CELLULAR AND EXTRA CELLULAR FLUID . NEED TO KNOW THIS? I know most of u dentist  would be wondering  why i had posted body composition ;but at doctors we definitely need to know  these basic terms and it percentage which is mandatory . hi my lovelies stencil dent family, please help me out by commenting down your valuable suggestion so that it would be helpful .                                             THANKS FOR WATCHING

    " INTERCELLULAR JUNCTION"  INTRODUCTION : Cell membrane of neighboring cells are connected with one other . There are 3 types of junction                                                 1) TIGHT                                                   2)ADHERANS                                                  3) GAP  1) T ight junction :  other name zona occuludens       They form a barrier to movement of ions and other solutes from one cell to another. 2)  Adherans :   other name zonula adherans. ·        There are   2 types of attachment –hemidesmosome and desmosome. 3) G ap junction: It helps in exchange of chemical messengers between the cells                          THANKS FOR WATCHING

                          HEMOSTASIS         INTRODUCTION  Spontaneous arrest or prevention of bleeding from injured /damaged vessels by physiological process. STEPS IN HOMEOSTASIS : VASOCONSTRICTION FORMATION OF TEMPORARY HEMOSTATIC PLUG  FORMATION OF PERMANENT HEMOSTATIC PLUG              AIM OF THIS POST: Today we have started with learning on what hemostasis is then we moved in to steps in haemostasis. If you like this post , and  if you want me to upload on youtube do let us know   in the comment section below as it would help me create more such content . Contact details : Email: stencildent@gmail.com Instagram: Stencildent                                                        THANK YOU

                            ERYTHROPOIESIS  CONTENTS  STAGES OF ERYTHROPOIESIS  REGULATION OF ERYTHROPOIESIS STIMULATION OF SECRETION ACTION FACTORS AFFECTING IT