Chiasmatic groove

Chiasmatic groove
Bone: Chiasmatic groove
Gray145.png
Sphenoid bone. Upper surface. (Sulcus chiasmaticus labeled at center)
Gray193.png
Base of the skull. Upper surface. (Sphenoid bone is yellow; chiasmatic groove labeled at center left, fourth from the top of the labels near the yellow region.)
Latin sulcus prechiasmaticus, sulcus chiasmaticus
Gray's subject #35 147

The superior surface of the body 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, prechiasmatic sulcus), above and behind which lies the optic chiasma of cranial nerve 2 (the optic nerve).

The groove ends on either side in the optic foramen, which transmits the optic nerve and ophthalmic artery into the orbital cavity.

External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

v · d · eBones of head and neck: the neurocranium of the skull (TA A02.1.01–07, GA 2.129–155)
Occipital
Other
Parietal
Frontal
Ethmoidal notch · Fossa for lacrimal gland · Trochlear fovea · Frontal sinus · Frontonasal duct
Temporal
Sphenoid
Surfaces
fossae (Pterygoid, Scaphoid) · pterygoid plates (Lateral, Medial) · Pterygoid canal · Hamulus
Other
Ethmoid
Plates
Surfaces
Ethmoid sinus · ethmoidal foramina (Posterior, Anterior)

M: BON/CAR

anat(c/f/k/f, u, t/p, l)/phys/devp/cell

noco/cong/tumr, sysi/epon, injr

proc, drug(M5)

Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • chiasmatic groove — n a narrow transverse groove that lies near the front of the superior surface of the body of the sphenoid bone, is continuous with the optic foramen, and houses the optic chiasma called also optic groove …   Medical dictionary

  • groove — A narrow, elongate depression or furrow on any surface. SEE ALSO: sulcus. alveolobuccal g. the upper and lower half of the buccal vestibule on each side. SYN: alveolobuccal sulcus, gingivobuccal g., gingivobuccal sulcus. alveololabial g. 1. the… …   Medical dictionary

  • Occipital groove — Bone: Occipital groove Left temporal bone. Outer surface. (Occipital groove labeled at bottom right.) Latin sulcus arteriae occipitalis Gray s …   Wikipedia

  • optic groove — n CHIASMATIC GROOVE * * * sulcus prechiasmaticus …   Medical dictionary

  • Sulcus — From the Latin for a groove, furrow, or trench. In medicine, there are many sulci (plural of sulcus) as, for example, the superior pulmonary sulcus. * * * 1. [TA] One of the grooves or furrows on the surface of the brain, bounding the several… …   Medical dictionary

  • Middle cranial fossa — Base of the skull. Upper surface. (Middle cranial fossa is the centermost of the three indentations, in pink and yellow.) Latin fossa cranii media Gray s …   Wikipedia

  • Bone — This article is about the skeletal organ. For other uses, see Bone (disambiguation) and Bones (disambiguation). For the tissue, see Osseous tissue. Drawing of a human femur Bones are rigid organs that constitute part of the endoskeleton of… …   Wikipedia

  • Optic canal — Bone: Optic foramen 1: Foramen ethmoidale 2: Canalis opticus 3: Fissura orbitalis superior 4: Fossa sacci lacrimalis 5: Sulcus infraorbitalis 6: Fissura orbitalis inferior 7: Foramen infraorbitale …   Wikipedia

  • Anterior cranial fossa — Base of the skull. Upper surface. (Anterior cranial fossa is the top of the three indentations.) Latin fossa cranii anterior Gray s …   Wikipedia

  • Parietal bone — Bone: Parietal bone Figure 1 : Left parietal bone. Outer surface …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”