calcarine sulcus

(noun)

An anatomical landmark located at the caudal end of the medial surface of the brain.

Related Terms

Examples of calcarine sulcus in the following topics:

  • Sensory Areas

    • The primary somatosensory cortex, located across the central sulcus and behind the primary motor cortex, is configured to generally correspond with the arrangement of nearby motor cells related to specific body parts.
    • The visual area is located on the calcarine sulcus deep within the inside folds of the occipital lobe.

  • Development of Vision

    • Development of the optic vesicles starts in the three week embryo from a progressively deepening groove in the neural plate called the optic sulcus.
    • As this expands, the rostral neuropore (the exit of the brain cavity out of the embryo) closes and the optic sulcus and the neural plate becomes the optic vesicle.

  • Humerus (The Upper Arm)

    • Between the two tubercles lies a deep grove called the intertubercular sulcus, through which the tendon of the long head of the biceps brachii runs.

  • Hypoglossal (XII) Nerve

    • The hypoglossal nerve emerges from the medulla oblongata in the preolivary sulcus where it separates the olive (olivary body) and the pyramid (medullary pyramid).

  • The Brain

    • Anatomists call each cortical fold a sulcus and the smooth area between folds a gyrus.
    • The only exception is the border between the frontal and parietal lobes, which is shifted backward from the corresponding suture to the central sulcus.

  • Cerebral Lobes

    • It is separated from the parietal lobe by a space between tissues called the central sulcus and from the temporal lobe by a deep fold called the lateral (Sylvian) sulcus.

  • Spinal Cord Grey Matter and Spinal Roots

    • The posterior median sulcus is the groove in the dorsal side, and the anterior median fissure is the groove in the ventral side.

  • Cerebrospinal Fluid and Its Circulation

    • It constitutes the content of all intracerebral ventricles, cisterns, and sulci (singular sulcus), as well as the central canal of the spinal cord.

  • Medulla Oblongata

    • The region between the anterolateral and posterolateral sulcus in the upper part of the medulla is marked by a swelling known as the olivary body, caused by a large mass of gray matter known as the inferior olivary nucleus.

  • Overview of the Cerebrum

    • The cortex is composed of two hemispheres, right and left, separated by a large sulcus.