Main difference – Gyri vs Sulci

The brain and the spinal cord are the significant components the the main nervous device in all vertebrates and also some invertebrates. The brain is situated in the head, close come the major sensory organs. It collaborates the attributes of the body. The mind is consisted of of two types of tissues well-known as gray matter and also white matter. The mind surface or the cerebral cortex is comprised of gray matter that comprises neuronal cabinet bodies, a few axons, dendrites, glial cells, and synapses. The gray issue should it is in packed right into a minimal space inside the skull. For this purpose, the animals with big brains such together humans have actually a convoluted cerebral cortex. Gyri and also sulci space two structures that happen as a result of a convoluted cerebral cortex. The main difference between gyri and also sulci is that gyri describe the ridges conversely, sulci describe the grooves that develop the folds. 

Key locations Covered

1. What are Gyri – Definition, Anatomy, significant Gyri 2. What space Sulci – Definition, Anatomy, remarkable Sulci 3. What are the Similarities in between Gyri and also Sulci – summary of common Features 4. What is the Difference in between Gyri and Sulci  – compare of an essential Differences

Key Terms: Brain, Cerebral Cortex, Convolutions, Fissures, Gray Matter, Gyri, Lobes, Sulci


What room Gyri

Gyri (singular gyrus) refer to the ridges between two clefts ~ above the cerebral surface of the brain. The clefts that surround a gyrus are dubbed sulci. The surface area the the brain is raised by the presence of gyri. The enhanced surface area offers a far better cognition inside a minimal size by the skull. Together gyri space a component of the cerebral cortex, lock are comprised of gray matter. Thus, lock contain neuronal cell bodies, dendrites, glial cells, a few axons, and also synapses. A gyrus surrounding by sulci is presented in figure 1.

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Figure 1: framework of the Cerebral Cortex

Some remarkable gyri space superior, middle, and inferior frontal gyri, superior, middle, and inferior temporal gyri, precentral gyrus, angular gyrus, and lingual gyrus. Some gyri are functionally important as well. As an example, the remarkable temporal gyrus comprises the Wernicke’s area that is important in the computation of the language. Top top the various other hand, the precentral gyrus serves together the major motor facility of the brain. The structural abnormalities of the gyri may cause clinical conditions such together epilepsy.

What are Sulci

Sulci (singular sulcus) refer to the grooves ~ above the surface of the brain. They surround the gyri. The sulci room responsible for the convoluted nature that the brain. Ideally, human mind comprises a deep convoluted nature. The deepest grooves the separate big regions that the brain are dubbed fissures. Sulci aid the compact packing of the large cerebral cortex inside the skull. Generally, two-thirds the the surface area is hidden in the sulci. As fissures are an ext deep grooves, they divide the mind into lobes. The longitudinal fissure divides the brain into two hemispheres. The sulci, gyri, and also fissures that the mind are shown in number 2.


Figure 2: Sulci, Gyri, and Fissures the the Brain

The sulci patter different from separation, personal, instance to another. Few of the significant sulci are central sulcus that insula, main sulcus, calcarine sulcus, hippocampal sulcus, etc. 

Similarities in between Gyri and also Sulci

Both gyri and also sulci are created as a result of a convoluted nature of the brain.Both gyri and sulci deserve to be uncovered in the cerebral cortex that the cerebral hemispheres.Both gyri and also sulci are comprised of gray matter.Both gyri and sulci play critical in pack the brain into the skull.

Difference in between Gyri and Sulci


Gyri: Gyri room the ridges in between two clefts on the cerebral surface ar of the brain.

Sulci: Sulci space the grooves top top the surface of the brain.


Gyri: Gryi space located in between sulci.

Sulci: Sulci space located in between the gyri.


Gyri: Gyri are the ridges of the mind folds.

Sulci: Sulci are the grooves of the mind folds.


Gyri: Gyri contain cell bodies the the neurons, dendrites, and synapses.

Sulci: Sulci separate the cerebral cortex right into several gyri.


Gyri: Superior, middle and inferior frontal gyri, superior and middle temporal gyri, and precentral and also postcentral gyri are some instances of gyri.

Sulci: Superior frontal and also inferior frontal sulci, superior and also inferior temporal sulci, and central sulcus are some of the instances of sulci.


Gyri and also sulci room two types of structures created by the convoluted nature that the brain. Gyri are the ridges that the folds while sulci space the grooves that different the cerebral cortex right into gyri. The convoluted nature that the mind aids the compact packaging of the brain in the skull. The key difference in between gyri and also sulci is the anatomy the each structure in the cerebral cortex.

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1. “What is a Gyrus?” Kenhub, accessible here. 2. “Sulcus (Neuroanatomy).” Wikipedia, Wikimedia Foundation, 24 Dec. 2017, accessible here. 3. Schnaudigel, O E. “.” Fortschritte der Ophthalmologie : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft., U.S. National Library that Medicine, easily accessible here.

Image Courtesy:

1. “Gyrus sulcus” by Albert Kok at netherlands Wikipedia – moved from nl.wikipedia come Commons.(Original text: eigen bewerking) (Public Domain) via Commons Wikimedia 2. “Blausen 0115 BrainStructures” by employee (2014). “Medical collection of Blausen medical 2014”. WikiJournal of medicine 1 (2). DOI:10.15347/wjm/2014.010. ISSN 2002-4436. – Own work (CC by 3.0) via Commons Wikimedia