CONNECTIVE TISSUE

CONNECTIVE TISSUE : 

CONNECTIVE TISSUE

DEFINITION: 

DEFINITION DEFINED AS ONE BASIC TISSUES OF THE BODY WHICH GIVES STRUCTURAL AND METABOLIC SUPPORT TO OTHER TISSUES AND ORGANS OF THE BODY. IT CONNECTS OTHER TISSUES.

GENERAL FEATURES: 

GENERAL FEATURES MADE UP OF –(a) CELLS, (b)FIBRES AND (c)GROUND SUBSTANCE. 2. HAS LARGE AMOUNT OF EXTRACELLULAR MATRIX. 3. MOST OF THE CONNECTIVE TISSUE DEVELOPS FROM MESODERM, EXCEPT PIGMENT CELLS.

CLASSIFICATION: 

CLASSIFICATION ORDINARY CONNECTIVE TISSUE SCLERAL CONNECTIVE TISSUE LYMPHOID TISSUE HAEMOPOETIC TISSUE 1.LOOSE AREOLAR TISSUE CARTILAGE LYMPHOID ORGANS BLOOD 2.DENSE CONNECTIVE TISSUE 3. SPECIAL CONNECTIVE TISSUE- ADIPOSE TISSUE, MUCOID (EMBRYONIC CONNECTIVE TISSUE) , RETICULAR TISSUE, ELASTIC TISSUE . BONE

COMPONENTS : 

COMPONENTS COMPOSED OF CELLS 2. FIBRES 3. GROUND SUBSTANCE/ MATRIX [FIBRES AND GROUND SUBSTANCE ARE TOGETHER KNOWN AS EXTRACELLULAR MATRIX]

CELLS: 

CELLS FIXED CELLS/ RESIDENT CELLS. WANDERING CELLS/FREE CELLS. 1.FIBROBLASTS 1. FREE MACROPHAGE 2.MESENCHYMAL CELLS 2. PLASMA CELLS 3.ADIPOCYTES (FAT CELLS) 3. MAST CELLS 4.PIGMENT CELLS 4. LEUCOCYTES 5.FIXED MACROPHAGE (HISTIOCYTES)

FIBRES: 

FIBRES 3 TYPES A] COLLAGEN FIBRES B] ELASTIC FIBRES C] RETICULAR FIBRES

GROUND SUBSTANCE/ MATRIX: 

GROUND SUBSTANCE/ MATRIX THEY ARE TRANSPARENT GELL LIKE MATERIAL IN WHICH CELLS AND THE FIBRES ARE EMBEDDED. IT IS COMPOSED MAINLY OF: MUCOPOLYSACCHARIDES/GLYCOSAMINOGLYCANS- HEPARAN SULPHATE,CHONDROITIN SULPHATE, HYALURONIC ACID. 2.GLYCOPROTEINS- CHONDRONECTIN IN CARTILAGE. 3. WATER AND ELECTROLYTES.

CELLS OF THE CONNECTIVE TISSUE: 

CELLS OF THE CONNECTIVE TISSUE CELL MORPHOLOGY FUNCTION 1.FIBROBLAST 2. MESENCHYMAL CELLS 3. ADIPOSE CELLS FLAT CELLS, HAVE MANY PROCESSES, OVAL NUCLEUS, BASOPHILLIC CYTOPLASM, MATURE OLD FIBROBLAST ARE KNOWN AS FIBROCYTE, FIBROBLAST WITH CONTRACTILE PROPERTIES ARE KNOWN AS MYOFIBROBLAST. THEY ARE UNDIFFENTIATED CELLS, STELLATE IN SHAPE, HAVE PROCESSES. OVAL IN SHAPE, HAS A SINGLE LIPID DROPLET (UNILOCULAR) WHICH LEAVES A LARGE EMPTY SPACE, A THIN RIM OF CYTOPLASM AND A PERIPHERAL NUCLEUS .(SIGNET RING APPEARANCE) RESPONSIBLE FOR THE PRODUCTION AND MAINTENANCE OF FIBRES AND GROUND SUBSTANCE OF THE CONNECTIVE TISSSUE. CAN GIVE RISE TO ANY TYPE OF CELL IF STIMULATED.

Slide 10: 

CELL MORPHOLOGY FUNCTION 4. PIGMENTCELLS 5. FIXED MACROPHAGE (HISTYOCYTES)/ FREE MACREPHAGE 6. PLASMA CELLS STELLATE CELLS WITH PROCESSES CONTAINING PIGMENT GRANULES IN THE CYTOPLASM HAVE VARIOUS SHAPES- STELLATE, OVAL, FUSIFORM etc, HAVE ECCENTRIC BEAN SHAPED NUCLEUS, AND PROCESSES. OVAL IN SHAPE, ECCENTRIC NUCLEUS WHICH GIVES A TYPICAL CART WHEEL APPEARENCE , BASOPHILLIC CYTOPLASM ARE OF 2 TYPES- (a)MELANOCYTES- CONCERNED WITH THE PRODUCTION OF PIGMENT AND (b) MELANOPHORES- CONCERNED WITH STORAGE OF PIGMENT GRANULES. PHAGOCYTIC IN NATURE- DESTROY BACTERIA , FOREIGN BODIES AND DEAD TISSUES.

Slide 11: 

CELLS MORPHOLOGY FUNCTION 7. MAST CELLS 8. LERCOCYTES OVAL IN SHAPE WITH CENTRALLY PLACED NUCLEUS, CYTOPLASM FILLED WITH METACHROMATIC GRANULES. ARE OF 2 TYPES- GRANULOCYTES AND AGRANULOCYTES SECRETE (a) HISTAMINE- PRODUCES ALLERGIC SYMPTOMS (b) HEPARIN- ANTICOAGULANT (c) SERATONIN- VASOCONSTRICTOR. PHAGOCYTOSIS

FIBRES: 

FIBRES NAME OF THE FIBRE FEATURES COLLAGEN FIBRES 5 TYPES: TYPE1- BONES, TENDON TYPE2-CARTILAGE TYPE3-RETICULAR FIBRES TYPE4-BASEMENT MEMBRANE TYPE5- BLOOD VESSELS 2. ELASTIC FIBRES 3. RETICULAR FIBRES →FOUND IN BUNDLES WHICH MAY BE STRAIGHT OR WAVY →BUNDLES CONSIST OF NUMBER OF FIBRES →BUNDLES BRANCH BUT INDIVIDUAL FIBRES DO NOT BRANCH →HAVE HIGH STRENGTH, AND RESIST STRETCHING. →FOUND IN SINGLE →INDIVIDUAL FIBRES BRANCH →HAVE ELASTIC PROPERTIES →ARE SMALL IN LENGTH BRANCH AND FORM A NETWORK (RETICULUM) WHICH FORM A SUPPORTING FRAMEWORK FOR GLANDS AND LYMPHOID TISSUES.

APPLIED HISTOLOGY: 

APPLIED HISTOLOGY 1]GIANT CELLS 2]HYLURONIDASE 3] FRACTURE UNION AND WOUND HEALING 4] SCAR TISSUE

FUNCTIONS: 

FUNCTIONS SUPPORT PACKING STORAGE TRANSPORT REPAIR DEFENCE

LOOSE AREOLAR TISSUE: 

LOOSE AREOLAR TISSUE

DENSE REGULAR CONNECTIVE: 

DENSE REGULAR CONNECTIVE

DENSE REGULAR CONNECTIVE TISSUE: 

DENSE REGULAR CONNECTIVE TISSUE

ADIPOSE TISSUE: 

ADIPOSE TISSUE

FIBRES: 

FIBRES

QUESTIONS: 

QUESTIONS DEFINE AND CLASSIFY CONNECTIVE TISSUE NAME THE COMPONENTS OF CONNECTIVE TISSUE NAME THE CELLS FOUND IN CONNECTIVE TISSUE NAME THE FUNCTIONS AND FEATURES OF THE FOLLOWING CELLS- MACROPHAGE, PLASMA CELL, MAST CELL, FIBROBLAST WHAT ARE GIANT CELLS NAME THE VARIOUS FIBRES FOUND IN CONNECTIVE TISSUE WHAT IS GROUND SUBSTANCE. GIVE ITS FUNCTIONS. WHAT IS THE GROUND SUBSTANCE IN CONNECTIVE TISSUE WHAT IS HYALURONIDASE.

CONTACT ME: 

CONTACT ME DR SURAJIT KUNDU dr.surajitkundu@rediffmail.com