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Lecture 14   ESS_2nd semester ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Etiologal factors inducing congenital malformations are usually classified as follows: a) environmental - 7-10  % , environmental factors  inducing anomalies are  called  teratogens, b) genetic - 10-15%, CM are caused  by numerical  chromosomal  abnormalities or by mutant genes c) multifactorial -  20 25  %, CM are caused by  action  of both previous  factors   together for cca 50%  of CM, the causes are unknown
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],Due an enlargement of the amniotic sac, the extraembryonic coelom disappears and amnion lies to close vicinity of the chorionic sac , b oth membranes ultimately fuse in one common layer known as amniochorionic membrane
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],the cavities posses  a parietal wall  lined by mesothelium derived from the somatic mesoderm, and  a splanchnic (visceral) wall  covered by mesothelium derived from the splanchnic mesoderm
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],DEVELOPMENT OF THE DIGESTIVE SYSTEM: THE STOMODEUM, THE PRIMITIVE GUT AND THE PROCTODEUM
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
 
 
DE RIVATIVES  OF THE  PRIMITIVE GUT ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 

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Lecture14 teratology

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  • 3. Etiologal factors inducing congenital malformations are usually classified as follows: a) environmental - 7-10 % , environmental factors inducing anomalies are called teratogens, b) genetic - 10-15%, CM are caused by numerical chromosomal abnormalities or by mutant genes c) multifactorial - 20 25 %, CM are caused by action of both previous factors together for cca 50% of CM, the causes are unknown
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