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STRUCTURAL ORGANISATION IN ANIMALS

IMPORTANT TERMS:

    ·               Actin Filaments: Contain thin protein actin, from I-band and extent into A-band in                                            striated muscle fibres.

·               Aestivation: Also called summer sleep; The condition of rest during summer in some         cold blooded animals like frog.

·               Adipocytes: Large spherical or oval cells almost entirely filled with fat granules.

·               Anaemia: A condition when RBC count fall below normal.

·               Axolemma: The membrane enclosing the axoplasm in a neuron.

·               Chondrocytes: Also called cartilage cell formed by chondroblasts.

·               Fibroblasts: Cells that produce the fibres and matrix in the connective tissue.

·               Goblet Cells: Mucus producing cells interspersed in cuboidal and columnar epithelium.

·               Haversian Canal: Form a central canal in a Haversian canal system in long bones.

·               Mesenchyma: All the tissues of adult body which are derived from mesoderm.

·               Myosin Filament: Filament containing thick protein myosin.

·               Neurilemma: The outermost continuous covering of the neuron, infact, it is the plasma     membrane of Schwann cells.

·               Neurogila Cells: Non-nervous part of the nerve tissue, which fills up the interneuron         spaces.

·               Ootheca: An egg case of animals like earthworm, cockroach etc.

·               Polycythemia: An abnormal rise of erythrocyte count.

·               Sarcomere: An area between two Z lines in a myofibril.

·               Volkman’s Canals: Transverse canals that interconnect various Haversian canal    together.

           ADDITIONAL INFORMATION:

·         Kinesiology: The scientific study of body movements.

·         Skin is the largest body organ and performs largest number of functions. So it is called ‘Jacks of all trades.

·         Periplaneta Americana is commonly called ‘American cockroach’, ‘Bombay canary’ or ‘Ship cockroach’.

Mr. A. KINGSLIN M.Sc, BEd, Phd,(doing)
Post Graduate Teacher in Botany
St. Mary Goretty Hr. Sec School, Manalikarai 
Kanyakumari district





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