Optic canal

Multi tool use
Multi tool use







Optic foramen

Orbita mensch.jpg
1: Foramen ethmoidale
2: Canalis opticus
3: Fissura orbitalis superior
4: Fossa sacci lacrimalis
5: Sulcus infraorbitalis
6: Fissura orbitalis inferior
7: Foramen infraorbitale


Gray193.png
Base of the skull. Upper surface. (On the left, "Optic foramen" is the 12th label from the top.

Details
Identifiers
Latincanalis opticus, foramen opticum ossis sphenoidalis
TAA02.1.05.021
FMA54774

Anatomical terms of bone
[edit on Wikidata]

The optic foramen is the opening to the optic canal. The canal is located in the sphenoid bone; it is bounded medially by the body of the sphenoid and laterally by the lesser wing of the sphenoid.


The superior surface of the sphenoid bone is bounded behind by a ridge, which forms the anterior border of a narrow, transverse groove, the chiasmatic groove (optic groove), above and behind which lies the optic chiasma; the groove ends on either side in the optic foramen, which transmits the optic nerve and ophthalmic artery (with accompanying sympathetic nerve fibres) into the orbital cavity. Compared to the optic nerve, the ophthalmic artery is located inferolaterally within the canal.


The left and right optic canals are 25mm apart posteriorly and 30mm apart anteriorly. The canals themselves are funnel-shaped (narrowest anteriorly).




Contents





  • 1 Additional images


  • 2 See also


  • 3 References


  • 4 External links




Additional images






  • The seven bones which articulate to form the orbit.







  • Sphenoid bone. Upper surface.







  • Medial wall of left orbit.







  • Dissection showing origins of right ocular muscles, and nerves entering by the superior orbital fissure.







  • Optic canal





See also


  • Foramina of skull


References


This article incorporates text in the public domain from page 147 of the 20th edition of Gray's Anatomy (1918)



External links



  • Anatomy photo:29:os-0501 at the SUNY Downstate Medical Center


  • Atlas image: eye_6 at the University of Michigan Health System - (look for #3)


  • Anatomy image: skel/internal2 at Human Anatomy Lecture (Biology 129), Pennsylvania State University (look for #10)











O,BYDtcR H,Rg,05cbiAfK
-
canWLfvC,89acZkSd,S5Flmg,zUz Ifs6oEMRcul7U,q6wVIjGsBDGNV

Popular posts from this blog

How to check contact read email or not when send email to Individual?

Image
Clash Royale CLAN TAG #URR8PPP up vote 1 down vote favorite I'm using WordPress 4.9.8, CiviCRM to 5.5.1, I usually send email to contact by Search> Find contacts View contact details Action> Send email Send email ok, Contact received mail ok like picture But status only Email sent though contact read email or not. So, can CiviCRM can change status to Email read when contact read email? wordpress email share | improve this question asked Sep 26 at 0:12 ToanLuong 49 9 add a comment  |  up vote 1 down vote favorite I'm using WordPress 4.9.8, CiviCRM to 5.5.1, I usually send email to contact by Search> Find contacts View contact details Action> Send email Send email ok, Contact received mail ok like picture But status only Email sent though contact read email or not. So, can CiviCRM can change status to Email read when contact read email? wordpress email share | improve this questi...
Read more

How many registers does an x86_64 CPU actually have?

Image
Clash Royale CLAN TAG #URR8PPP up vote 2 down vote favorite I am currently learning reverse engineering and am studying the flags register. I had in my mind that rflags was just another name for one of the 16 general purpose registers, for example rax or rbx . But it looks like rflags is actually an additional register. So that makes 17 registers in total... how many more could there be? I have spent at least an hour on this and found numerous different answers. The best answer so far is this, which says that there are 40 registers in total. 16 General Purpose Registers 2 Status Registers 6 Code Segment Registers 16 SSE Registers 8 FPU/MMX Registers But if I add that up, I get 48. Could anybody provide an official answer on how many registers an x86_64 CPU has (e.g. an Intel i7). Additionally, I have seen references to 'hardware' and 'architectural' registers. What are those registers and how many are there? register x86-64 share | improve this...
Read more

Displaying single band from multi-band raster using QGIS

Image
Clash Royale CLAN TAG #URR8PPP 1 How can I extract a single band from multi-band raster in QGIS? I have an remote sensed image which has 6 bands (including NDVI band), I want to display each band separately, but have no idea how to do. I have seen some questions similar here but none worked for me. The original image (has 6 bands) is: I want to display the band 6 which should be like this: But I tried gdal_translate, and couldn't get the correct result. What I have got is: qgis raster multi-band share | improve this question edited Mar 5 at 0:53 Summer asked Mar 4 at 6:42 Summer Summer 23 6 Is this any help gis.stackexchange.com/questions/220658/… ? if not gis.stackexchange.com/questions/62133/… might help. – Michael Stimson Mar 4 at 6:46 Thanks for answering but when I used gdal_translate, qgis showed that 'Error 4: Kayena.tif: No such file or directory". Would you know how to fi...
Read more