Circular sulcus
Citation, DOI, disclosures and article data
At the time the article was created Maciej Debowski had no recorded disclosures.
View Maciej Debowski's current disclosuresAt the time the article was last revised Craig Hacking had the following disclosures:
- Philips Australia, Paid speaker at Philips Spectral CT events (ongoing)
These were assessed during peer review and were determined to not be relevant to the changes that were made.
View Craig Hacking's current disclosures- Circular sulcus of Reil
- Periinsular sulcus
- Circular sulcus
- Peri-insular sulcus
The circular sulcus, or peri-insular sulcus is a deep sulcus that surrounds the lateral surface of the insular cortex and separates it from the operculum of the frontal, temporal and parietal lobes. In this sulcus, the M2 segment of the middle cerebral artery (MCA) completes a downward turn at the superior and inferior limiting sulci of the insula and passes into the opercular compartment to become the M3 segment of the MCA.
Gross anatomy
The circular sulcus can more precisely be divided into four peri-insular sulci: anterior, inferior, superior, and posterior. The circular sulcus is contiguous with the lateral (Sylvian) sulcus forming part of the operculoinsular compartment of the Sylvian fissure3.
History and etymology
The circular sulcus is also known as the circular sulcus of Reil, named after German anatomist, physiologist and pioneer psychiatrist Johann Christian Reil (1759-1813) 7.
References
- 1. The cerebral sulci and gyri. (2010) Neurosurgical Focus. 28 (2): E2. doi:10.3171/2009.11.FOCUS09245
- 2. Gaw A. 'The principles of a future pharmacology': Johann Christian Reil (1759-1813) and his role in the development of clinical pharmacology. European journal of clinical pharmacology. 72 (1): 13-7. doi:10.1007/s00228-015-1964-2 - Pubmed
- 3. Hirohiko Gibo, Christopher C. Carver, Albert L. Rhoton, Carla Lenkey, Robert J. Mitchell. Microsurgical anatomy of the middle cerebral artery. (1981) Journal of Neurosurgery. 54 (2): 151. doi:10.3171/jns.1981.54.2.0151
- 4. Wen, Hung Tzu, Rhoton, Albert L., de Oliveira, Evandro, Castro, Luiz Henrique M., Figueiredo, Eberval Gadelha, Teixeira, Manoel Jacobsen. Microsurgical Anatomy of the Temporal Lobe: Part 2—Sylvian Fissure Region and Its Clinical Application. (2009) Operative Neurosurgery. 65 (suppl_6): ons1. doi:10.1227/01.NEU.0000336314.20759.85
Incoming Links
Related articles: Anatomy: Brain
-
brain
- grey matter
- white matter
-
cerebrum
-
cerebral hemisphere (telencephalon)
- cerebral lobes and gyri[+][+]
- frontal lobe
- parietal lobe
-
occipital lobe
- occipital pole
- lingual gyrus
- fusiform gyrus (Brodmann area 37)
- calcarine (visual) cortex
- cuneus
- temporal lobe
- basal forebrain
- limbic system
- insula
-
cerebral sulci and fissures (A-Z)
- calcarine fissure
- callosal sulcus
- central (Rolandic) sulcus
- cingulate sulcus
- collateral sulcus
- inferior frontal sulcus
- inferior occipital sulcus
- inferior temporal sulcus
- interhemispheric fissure
- intraparietal sulcus
- lateral (Sylvian) sulcus
- lateral occipital sulcus
- marginal sulcus
- occipitotemporal sulcus
- olfactory sulcus
- paracentral sulcus
- paraolfactory sulcus
- parieto-occipital fissure
- posterior parolfactory sulcus
- precentral sulcus
- preoccipital notch
- postcentral sulcus
- rhinal sulcus
- rostral sulcus
- subparietal sulcus
- superior frontal sulcus
- superior occipital sulcus
- superior temporal sulcus
- cortical histology[+][+]
- cerebral lobes and gyri[+][+]
- white matter tracts[+][+]
- deep grey matter[+][+]
-
pituitary gland[+][+]
- posterior pituitary and stalk (part of diencephalon)
- anterior pituitary
- inferior hypophyseal arterial circle
- diencephalon[+][+]
-
cerebral hemisphere (telencephalon)
-
brainstem [+][+]
- midbrain (mesencephalon)
- pons (part of metencephalon)
- medulla oblongata (myelencephalon)
- white matter
-
grey matter
- non-cranial nerve
-
cranial nerve nuclei
- oculomotor nucleus
- Edinger-Westphal nucleus
- trochlear nucleus
- motor nucleus of CN V
- mesencephalic nucleus of CN V
- main sensory nucleus of CN V
- spinal nucleus of CN V
- abducent nucleus
- facial nucleus
- superior salivatory nucleus
- cochlear nuclei
- vestibular nuclei
- inferior salivatory nucleus
- solitary tract nucleus
- ambiguus nucleus
- dorsal vagal motor nucleus
- hypoglossal nucleus
-
cerebellum (part of metencephalon)[+][+]
- vermis
- cerebellar hemisphere
- cerebellar peduncles
- cranial meninges (meninx primitiva)[+][+]
- CSF spaces[+][+]
-
cranial nerves (mnemonic)[+][+]
- olfactory nerve (CN I)
- optic nerve (CN II)
- oculomotor nerve (CN III)
- trochlear nerve (CN IV)
- trigeminal nerve (CN V) (mnemonic)
- abducens nerve (CN VI)
- facial nerve (CN VII) (segments mnemonic | branches mnemonic)
-
vestibulocochlear nerve (CN VIII)
- vestibular ganglion (Scarpa's ganglion)
- glossopharyngeal nerve (CN IX)
- vagus nerve (CN X)
- spinal accessory nerve (CN XI)
- hypoglossal nerve (CN XII)
- functional neuroanatomy[+][+]
- CNS development[+][+]
- cerebral vascular supply[+][+]
- arteries
- vascular territories
-
circle of Willis
- internal carotid artery (ICA) (segments)
- vertebral artery
-
normal variants
- intracranial arterial fenestration
- internal carotid artery (ICA)
- anterior cerebral artery (ACA)
- middle cerebral artery (MCA)
- posterior cerebral artery (PCA)
- basilar artery
- persistent carotid-vertebrobasilar artery anastomoses (mnemonic)
- vertebral artery
- ophthalmic artery
-
cerebral venous system
-
dural venous sinuses
- basilar venous plexus
- cavernous sinus (mnemonic)
- clival diploic veins
- inferior petro-occipital vein
- inferior petrosal sinus
- inferior sagittal sinus
- intercavernous sinus
- internal carotid artery venous plexus of Rektorzik
- jugular bulb
- marginal sinus
- occipital sinus
- sigmoid sinus
- sphenoparietal sinus
- straight sinus
- superior petrosal sinus
- superior sagittal sinus
- torcula herophili
- transverse sinus
-
cerebral veins
-
superficial veins of the brain
- superior cerebral veins (superficial cerebral veins)
- inferior cerebral veins
- superficial middle cerebral vein
- superior anastomotic vein (of Trolard)
- inferior anastomotic vein (of Labbe)
-
superficial veins of the brain
-
deep veins of the brain
- great cerebral vein (of Galen)
- venous circle of Trolard
- normal variants
-
dural venous sinuses
- arteries
- glymphatic pathway