ANIMAL TISSUE - Career Point

CAREER POINT .– A the site of cut or injury serotonin decrease blood loss.(c) Heparin - A mucopolysaccharide, a natural anti-coagulant, prevents clotting of blood in blood vesselsby preventing the conversion of prothrombin into thrombin.ADIPOSE CELLS/FAT CELLS– Oval shaped stores fat.– Fat is collected in the form of fat globule formed by the fusion of small oil droplets.– On the basis of number of fat globules adipocytes are of two types.Monolocular adipocytes/ White fat tissue-cell– In these cells single large and central fat globule is present.– nucleus & Cytoplasm is peripheral and Cytoplasm is less in amount.– Due to compression of fat globule, nucleus become flattened in shape . These adipocytes form White Fat.Multilocular adipocytes/Brown fat tissue cell– In these cell 2-3 fat globules are distributed in the cytoplasm around nucleus– Cytoplasm is more in quantity.– Nucleus is rounded & found in the centre– These adipocytes form Brown Fat.MESENCHYMAL CELLS– Less in numbers . Small sized with cytoplasmic process having irregular shape.– Oval shaped nucleus– These are undifferentiated cells of connective tissue because they can transform into any cell ofconnective Tissue proper. (Totipotent in nature)Function : To form other cells of connective tissue.MACROPHAGES/HISTEOCYTE/CLASMATOCYTES.– It is 2 nd largest in size and in number.– Amoeboid in shape with bean or kidney shaped nucleus.– Cytoplasm quantity is more agranular but due to presence of more number of lysosome it appearsgranular.– Phagocytic in nature, destroy bacteria & viruses by phagocytosis. They arises by the fusion ofmonocytes– Also called as scavenger cells of connective tissue because they destroy dead or damaged cells to cleanconnective tissue.Macrophages are named differently in different organs.Lung – Dust cellsLiver – Kupffer cellsBlood – MonocytesBrain – Microgleal cellsThymus gland – Hessels granulesSpleen – Reticular cellsCorporate Office: CP Tower, IPIA, Road No.1, Kota (Raj.), Ph: 0744-3040000 (6 lines) ANIMAL TISSUE 15