Dictionary > Medial longitudinal fissure

Medial longitudinal fissure

Definition
noun
A median fissure separating the two hemispheres of the vertebrate brain
Supplement
The cerebrum of vertebrates, including humans, is divided by two hemispheres referred to as left and right cerebral hemispheres. A fissure exists between the two hemispheres and is referred to as median longitudinal fissure.
The median longitudinal fissure is a deep groove in between the two hemispheres. It is also called cerebral fissure or interhemispheric fissure. It is also referred to as simply longitudinal fissure. The falx celebri (or cerebral fals), a fold of the dura mater, covers it. Beneath this fissure is a corpus callosum. The corpus callosum (also called callosal commissure) is a bundle of commissural fibers that spans part of the median longitudinal fissure, and allows communication between the left and the right cerebral hemispheres.
The median longitudinal fissure should not be confused with another major groove in the brain, the central sulcus. The central sulcus is a fold in the cerebral cortex in vertebrate brain. It separates the parietal lobe from the frontal lobe and the primary motor cortex from the primary somatosensory cortex. The central sulcus is also called the central fissure or the fissure of Rolando.
Synonym(s):

  • longitudinal fissure
  • cerebral fissure
  • interhemispheric fissure

See also:

  • cerebrum


  • You will also like...

    Homeostatic Mechanisms and Cellular Communication
    Homeostatic Mechanisms and Cellular Communication

    Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..

    Chromosomes X and Y and Sex Determination
    Chromosomes X and Y and Sex Determination

    This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..

    Biosecurity and Biocontrol
    Biosecurity and Biocontrol

    This lesson explores the impact of biosecurity threats, and why they need to be identified and managed. Examples to incl..

    Population Growth and Survivorship
    Population Growth and Survivorship

    This lesson looks at population attributes, regulation, and growth. It also covers population genetics, particularly gen..

    Freshwater lake ecosystem
    Freshwater Producers and Consumers

    Freshwater ecosystem is comprised of four major constituents, namely elements and compounds, plants, consumers, and deco..

    Schematic diagram of bacterial lactose operon
    Gene Action – Operon Hypothesis

    Learn how the way genes control and determine every aspect of the body. This lesson uses lac operon as an example. ..

    ..

    Related Articles...

    No related articles found

    See all Related Topics