Search on: EXTRAEMBRYONIC MEMBRANES 
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Descriptor English:   Extraembryonic Membranes 
Descriptor Spanish:   Membranas Extraembrionarias 
Descriptor Portuguese:   Membranas Extraembrionárias 
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:  
AB abnormalities AH anatomy & histology
BS blood supply CH chemistry
CY cytology DE drug effects
EM embryology EN enzymology
GD growth & development IM immunology
IN injuries IR innervation
ME metabolism MI microbiology
PS parasitology PA pathology
PH physiology PP physiopathology
RE radiation effects RA radiography
RI radionuclide imaging SE secretion
SU surgery TR transplantation
US ultrasonography UL ultrastructure
VI virology  
Record Number:   5431 
Unique Identifier:   D005321 

Occurrence in VHL: 		 

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