Tela choroidea

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Tela choroidea of third ventricle
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Tela choroidea
Tela choroidea and choroid plexus
Anatomical terms of neuroanatomy

The tela choroidea (or tela chorioidea) is a region of

development of the embryo.[2][1]

Structure

Ventricles of the brain

In the

hippocampal fimbria in the inferior horn, and is the location of the attachment of the margins of the choroid plexus.[5][6] In the choroid fissure of the lateral ventricles, the tela choroidea is a lateral extension of the tela choroidea from the third ventricle.[7]

In the third ventricle the tela choroidea forms the roof of the ventricle. Two vascular fringes from the lower fold invaginate the roof and form the choroid plexus.[7]

The tela choroidea of the fourth ventricle (also known as the triangular lamella)[8] is a double layer of pia mater and ependyma, between the cerebellum and the lower part of the roof of the fourth ventricle. The two layers are continuous with each other in front, and are mostly adherent throughout. The anterior layer of the fold, contains vascular fringes which make up the choroid plexus.[7] The anterior layer is continuous inferiorly with the pia mater on the inferior cerebellar peduncles and the closed part of the medulla oblongata. The posterior layer covers the antero-inferior surface of the cerebellum.

primary cilia.[9]

Blood supply

Tela choroidea

The blood supply of these plexuses is from the posterior inferior cerebellar artery. The lateral ventricles also contains the right and left internal cerebral veins (which drain the choroid plexuses) at its roof (the two veins unite to form the great cerebral vein).[citation needed]

The arteries carrying blood into the choroid plexuses are:[citation needed]

  1. the anterior choroidal artery (branch from the internal carotid).
  2. the
    posterior choroidal artery
    (branch from the posterior cerebral artery).

Medial posterior choroidal branches run forward beneath the splenium of the corpus callosum, and supply the tela chorioidea of the third ventricle and the choroid plexus.

See also

References