Vukov materil GE 02 39 Tvrce Mgr rka
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Výukový materiál GE 02 - 39 Tvůrce: Mgr. Šárka Vopěnková Projekt: S anglickým jazykem do dalších předmětů Registrační číslo: CZ. 1. 07/1. 1. 36/03. 0005 Tento projekt je spolufinancován ESF a SR ČR EMBRYOGENESIS Tercie 2014
EMBRYOGENESIS heredity : Ø descendants similar to their parents Ø this feature allows the biological species retain characteristics for several generations Ø
EMBRYOGENEZE Ø Ø moment of fusion of sperm and egg > continuous division of fertilized cell first into two, four, eight, sixteen until a cluster of cells forms = morula the fourth day a cavity is formed in the cluster
EMBRYOGENESIS after fertilization: Ø the first three weeks vesicle is nestled in the wall of the uterus Ø from cell parts are formed protective coverings Ø germinal disc is formed from another part of the cell Ø the hardest stage of development: Ø differentiation of cells and tissues by hereditary information Ø
EMBRYOGENESIS Ø Ø Ø Ø Ø cells divide and differentiate again tissues are formed examples of tissues: muscular nervous epithelium binders body liquids organs originate from tissues organ systems from organs
EMBRYOGENESIS there are three basic layers of cells Ø = three embryonic leaves Ø outer embryonic leave = ectoderm Ø inner embryonic leave = entoderm Ø third embryonic leave = mesoderm Ø
EMBRYOGENESIS from ectoderm are formed: Ø epithelium Ø skin Ø nails Ø hair Ø nervous system Ø brain Ø
EMBRYOGENESIS from ectoderm are formed: Ø organs and glands of the digestive system Ø liver Ø pancreas Ø trachea Ø bronchi Ø alveoli Ø
EMBRYOGENESIS Ø from mesoderm are formed: Ø skeleton muscles blood vessels blood heart reproductive system Ø Ø Ø
WORKSHEET DESCRIBE THE PICTURE
SOURCES Ø Ø HANČOVÁ, Hana. Biologie v kostce 1: Obecná biologie. Mikrobiologie. Botanika. Mykologie. Ekologie. Genetika. 2. vyd. Havlíčkův Brod: Fragment, 1999, 112 s. ISBN 80 -7200340 -2. DOBRORUKA, Luděk J. Přírodopis: Obecná biologie. Mikrobiologie. Botanika. Mykologie. Ekologie. Genetika. 1. vyd. Praha: Scientia, 2000, 159 s. ISBN 80 -718 -3167 -0.
