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Id http://purl.obolibrary.org/obo/UBERON_0013153
http://purl.obolibrary.org/obo/UBERON_0013153
Preferred Name

arachnoid villus
Definitions
Small protrusions of the arachnoid mater into vascular sinuses, acting as one-way pressure-sensitive valves.
Synonyms
glandulæ pacchioni
arachnoid granulations
arachnoid villus
pacchioni's granulations
granulationes arachnoideales
arachnoid villi
pacchionian bodies
glandulae pacchioni
pacchionian glands
paccini's granulation
arachnoidal granulations
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Type http://www.w3.org/2002/07/owl#Class

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definition

Small protrusions of the arachnoid mater into vascular sinuses, acting as one-way pressure-sensitive valves.
preferred label
arachnoid villus
label
arachnoid villus
prefLabel
arachnoid villus
database_cross_reference
UMLS:C0228130
NCIT:C32137
Wikipedia:Arachnoid_granulation
FMA:83980
notation
UBERON:0013153
has_related_synonym
glandulæ pacchioni
arachnoid granulations
arachnoid villus
pacchioni's granulations
granulationes arachnoideales
arachnoid villi
pacchionian bodies
glandulae pacchioni
pacchionian glands
paccini's granulation
arachnoidal granulations
See more
See less
id
UBERON:0013153
note
Small protrusions of the arachnoid mater into vascular sinuses, acting as one-way pressure-sensitive valves.
alternative label
glandulæ pacchioni
arachnoid granulations
arachnoid villus
pacchioni's granulations
granulationes arachnoideales
arachnoid villi
pacchionian bodies
glandulae pacchioni
pacchionian glands
paccini's granulation
arachnoidal granulations
See more
See less
has_obo_namespace
uberon
part_of
external_definition
Arachnoid granulations (or arachnoid villi) are small protrusions of the arachnoid (the thin second layer covering the brain) through the dura mater (the thick outer layer). They protrude into the venous sinuses of the brain, and allow cerebrospinal fluid (CSF) to exit the brain, and enter the blood stream. Largest granulations lie along the superior sagittal sinus, a large venous space running from front to back along the centre of the head (on the inside of the skull). They are, however, present along other dural sinuses as well. Smaller granulations are called villi, large calcified ones are referred to as pacchionian bodies[Wikipedia:Arachnoid_granulation].
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