Talk:Subarachnoid cisterns

lumbar cistern redirect back to this parent article makes no sense!

At the last mentioned cistern in this article, a link to the lumbar cistern just redirects right back to this parent article! I guess if there's no actual article about the lumbar cistern, the redirect itself makes sense, but there doesn't seem to be any good reason to have a circular link at its place in this article, since it just returns a reader back to this article. UnderEducatedGeezer (talk) 08:09, 31 August 2020 (UTC)

Hello UnderEducatedGeezer, this sort of thing often happens when pages get moved and so on - can you not be bold and repair edits yourself - nobody will shout at you! Best --Iztwoz (talk) 16:25, 31 August 2020 (UTC)

Hi Iztwoz! Thanks, & I was going to take your advice, but I think you beat me to it, I hadn't seen your response until today. Besides being maybe un-bold, I often add links somewhat frequently to articles I happen upon, (because I really like being able to quickly get additional information or clarification within articles), so I am somewhat loath to remove them, even when appropriate. UnderEducatedGeezer (talk) 07:46, 3 September 2020 (UTC)

Probably not all sulci contain cisterns

After looking at various sources of information, I am forming the strong suspicion that this statement in the "Structure" section may be incorrect.

Although the pia mater adheres to the surface of the brain, closely following the contours of its gyri and sulci, the arachnoid mater only covers its superficial surface, bridging across the gyri. This leaves wider spaces between the pia and arachnoid and the cavities are known as the subarachnoid cisterns.

This would suggest that all of the spaces inside the sulci, between gyri, would be called "cisterns".

When one looks at those spaces which are called "cisterns", they do not seem to included all of the sulci, or even all of the large sulci. I get the impression that sulci and cisterns are quite different. Here's a list of the named cisterns.

Subarachnoid cisterns

The Sylvian cistern is inside the Sylvian fissure, but otherwise they do not correspond to the sulci.

Here's another article.

Neuroanatomy, Sylvian Fissure

It shows that the Sylvian cistern is deep inside the fissure. The fissure as a whole is not a cistern. See section "Deep Part".

Kenhub, which I have found is quite reliable, says this.

• Subarachnoid cisterns
• Areas where CSF accumulates due to spaces between pia and arachnoid are known as "subarachnoid cisterns".

They don't say that this is sulcus-related. (I've paraphrased it to avoid the copyright bot.)

In conclusion, I think that most likely the second sentence of the first paragraph of the "Structure" section is wrong. Alan U. Kennington (talk) 13:44, 28 October 2024 (UTC)