Hippocampal sulcus

Hippocampal sulcus

Infobox Brain
Name = PAGENAME
Latin = sulcus hippocampi
GraySubject =
GrayPage =


Caption = Hippocampal sulcus labeled at center.


Caption2 =
IsPartOf =
Components =
Artery =
Vein =
BrainInfoType = hier
BrainInfoNumber = 23
MeshName =
MeshNumber =
DorlandsPre = s_28
DorlandsSuf = 12768730
The hippocampal sulcus, also known as the hippocampal fissure, is a sulcus that separates the dentate gyrus from the subiculum and the CA1 field in the hippocampus.

Development in humans

During human fetal development, the hippocampal sulcus first appears at approximately 10 weeks of gestational age. At this stage it exists as a broad shallow fissure along the surface of the dentate gyrus. Gradually, the fissure deepens and shifts toward the cornu ammonis. After about 18 weeks, the walls of the fissure fold into each other and begin to fuse. By 30 weeks, the hippocampal sulcus is normally obliterated except for its most medial part, leaving a shallow surface indentation.Humphrey, Tryphena. "The development of the human hippocampal fissure". "J Anat". 1967 September; 101(Pt 4): 655–676.]

Pathology

Enlargement of the hippocampal sulcus has been associated with medial temporal lobe atrophy occurring in Alzheimer's disease. [cite journal|author=Bastos-Leite AJ, van Waesberghe JH, Oen AL, van der Flier WM, Scheltens P, Barkhof F|title=Hippocampal sulcus width and cavities: comparison between patients with Alzheimer disease and nondemented elderly subjects |journal=American journal of neuroradiology |volume=27 |issue=10 |pages=2141–5 |year=2006 |pmid=17110684]

ee also

*Hippocampus anatomy

References


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • hippocampal sulcus — n a fissure of the mesial surface of each cerebral hemisphere extending from behind the posterior end of the corpus callosum forward and downward to the recurved part of the parahippocampal gyrus called also hippocampal fissure * * * sulcus… …   Medical dictionary

  • hippocampal fissure — n HIPPOCAMPAL SULCUS * * * sulcus hippocampalis …   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

  • Sulcus (neuroanatomy) — In neuroanatomy, a sulcus (Latin: furrow , pl. sulci ) is a depression or fissure in the surface of the brain. It surrounds the gyri, creating the characteristic appearance of the brain in humans and other large mammals.Large furrows (sulci) that …   Wikipedia

  • Olfactory sulcus — Brain: Olfactory sulcus Orbital surface of left frontal lobe. (Olfactory sulcus visible at upper left.) …   Wikipedia

  • Cingulate sulcus — Brain: Cingulate sulcus Medial surface of left cerebral hemisphere. MRI showing the cingulate …   Wikipedia

  • Marginal sulcus — Brain: Marginal sulcus Medial surface of left cerebral hemisphere. (Marginal sulcus not labeled, but region is visible at upper left.) Latin ramus marginalis; sulcus marginalis NeuroNames …   Wikipedia

  • Parieto-occipital sulcus — Brain: Parieto occipital sulcus Fig. 726: Lateral surface of left cerebral hemisphere, viewed from the side …   Wikipedia

  • Circular sulcus of insula — Brain: Circular sulcus of insula The insula of the left side, exposed by removing the opercula …   Wikipedia

  • collateral sulcus — n a sulcus of the tentorial surface of the cerebrum lying below and external to the calcarine sulcus and causing an elevation on the floor of the lateral ventricle between the hippocampi called also collateral fissure * * * sulcus collateralis… …   Medical dictionary

Share the article and excerpts

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