Tag: cell
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Microscopic Slides
Cell Division
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Potency
Definition: Ability of a particular stem cell to generate various differentiated cell types. Stem cells have ability of self renewal. In mammals, 1) Totipotent Stem Cells: Capable of forming every cell in the embryo. Also, capable of forming trophoblast cells of placenta. Example: Zygote & first 4-8 blastomeres. 2) Pluripotent Stem Cells: Capable of forming…
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Integumentary System (Skin and its derivatives)
Introduction The common structural pattern of both aquatic & terrestrial vertebrates of integument is… Epidermis Derived from Ectoderm Stratified i.e. consists of multi-layers of cells Dermis Derived mainly from mesoderm Formed of connective tissue Contain blood & lymph vessels, nerve & smooth muscle fibres, receptors and also special irregular pigment cells (chromatophores) Below dermis, subcutaneous…