Search on: EXTRAEMBRYONIC MEMBRANES 
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Descriptor English:   Extraembryonic Membranes 
Descriptor Spanish:   Membranas Extraembrionarias 
Descriptor Portuguese:   Membranas Extra-Embrionárias 
Synonyms English:   Fetal Membranes  
Tree Number:   A10.615.284
A16.254.750
Definition English:   The thin layers of tissue that surround the developing embryo. There are four extra-embryonic membranes commonly found in VERTEBRATES, such as REPTILES; BIRDS; and MAMMALS. They are the YOLK SAC, the ALLANTOIS, the AMNION, and the CHORION. These membranes provide protection and means to transport nutrients and wastes. 
Indexing Annotation English:   induced rupture = LABOR, INDUCED; premature rupture = FETAL MEMBRANES, PREMATURE RUPTURE; rupture in normal labor = EXTRAEMBRYONIC MEMBRANES (IM) + LABOR, OBSTETRIC (IM)
Allowable Qualifiers English:  
abnormalities anatomy & histology
blood supply chemistry
cytology drug effects
embryology enzymology
growth & development immunology
injuries innervation
metabolism microbiology
pathology physiology
physiopathology parasitology
radiography radiation effects
radionuclide imaging secretion
surgery transplantation
ultrastructure ultrasonography
virology  
Record Number:   5431 
Unique Identifier:   D005321 

Occurrence in VHL: 		 

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