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3rd Week of Development: Trilaminar Germ Disc

1) Gastrulation •It is the formative process by which three germ layers, which are precursors of all embryonic tissues, and …

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Fertilization and Male Gametes

Fertilization •         The process by which male and female gametes fuse to give rise to a zygote. •         Occurs in …

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Skin

Thick Skin Stratum lucidum visible Thin Skin Stratum lucidum not visible Read about the skin here.

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Tonsils

Palatine Tonsils 1) Crypts are visible 2) Stratified squamous epithelium present Pharyngeal Tonsils 1) Fissures are visible 2) Pseudostratified columnar …

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Thymus, Spleen and Lymph node

Thymus 1) Hassells corpuscles visible 2) Lymphocytes visible Spleen 1) Red and white pulp visible 2) Central artery visible 3) …

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Epithelium

Simple Squamous Epithelium Single layer of cells visible Stratified Squamous Epithelium 1) Multilayered Lower cuboidal, then polygonal and then flattened …

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Cartilage

Hyaline Cartilage 1) Chondrocytes within lacunae 2) No fibers visible under light microscope Read detail about hyaline cartilage here. Fibrocartilage …

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Bone

Compact Bone 1) Haversion system seen 2) Concentric lamellae visible 3) Compact arrangement Details are available here. Decalcified Compact Bone …

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Spinal Cord and Peripheral Nerve

Spinal Cord 1) Inner grey matter outer white matter 2) Butterfly shaped grey matter Study the complete detail about spinal …

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Ganglia

Sympathetic Ganglia Autonomic Ganglia 1) Cell bodies dispersed 2) Multipolar neurons 2) Satellite cell covering Spinal Ganglia 1) Cell bodies …

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