Concept information
Preferred term
Extraembryonic Membranes
Type
-
mesh:Descriptor
Definition
- 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. Extra-embryonic tissues that contain the FETUS during PREGNANCY. They provide the support to accommodate FETAL DEVELOPMENT. Depending on the species, their structure and complexity vary greatly in the different forms of PLACENTA. These membranes undergo rupture during PARTURITION.
Broader concept
Narrower concepts
Entry terms
- Extra-Embryonic Membranes
Allowable Qualifier(s)
- abnormalities (Qualifier)
- anatomy & histology (Qualifier)
- blood supply (Qualifier)
- chemistry (Qualifier)
- cytology (Qualifier)
- diagnostic imaging (Qualifier)
- drug effects (Qualifier)
- embryology (Qualifier)
- enzymology (Qualifier)
- growth & development (Qualifier)
- immunology (Qualifier)
- injuries (Qualifier)
- innervation (Qualifier)
- metabolism (Qualifier)
- microbiology (Qualifier)
- parasitology (Qualifier)
- pathology (Qualifier)
- physiology (Qualifier)
- physiopathology (Qualifier)
- radiation effects (Qualifier)
- surgery (Qualifier)
- transplantation (Qualifier)
- ultrastructure (Qualifier)
- virology (Qualifier)
In other languages
-
French
-
Membranes extra-embryonnaires
URI
http://data.loterre.fr/ark:/67375/JVR-ZK2CL9LQ-M
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