• Thumbnail for Decussation
    Decussation is used in biological contexts to describe a crossing (due to the shape of the Roman numeral for ten, an uppercase 'X' (decussis), from Latin...
    6 KB (635 words) - 18:13, 23 January 2024
  • Thumbnail for Sensory decussation
    In neuroanatomy, the sensory decussation or decussation of the lemnisci is a decussation (i.e. crossover) of axons from the gracile nucleus and cuneate...
    3 KB (278 words) - 21:47, 14 August 2022
  • Thumbnail for Medullary pyramids (brainstem)
    anterior median fissure of the medulla oblongata as the pyramidal decussation or motor decussation. Having crossed over at the middle line, they pass down in...
    6 KB (639 words) - 05:34, 2 January 2024
  • Thumbnail for Superior cerebellar peduncle
    dorsal aspect of the ventricle and thus assist in forming its roof. The decussation of superior cerebellar peduncle is the crossing of fibers of the superior...
    4 KB (465 words) - 13:37, 28 February 2021
  • Thumbnail for Dorsal column–medial lemniscus pathway
    arcuate fibers and when they cross over the midline, at the sensory decussation in the medulla, they form the medial lemniscus which connects with the...
    14 KB (1,741 words) - 18:38, 13 June 2024
  • Thumbnail for Lateral corticospinal tract
    (rostral) or below (caudal) the pyramidal decussation. Damage to the body above the pyramidal decussation will cause contralateral motor deficits. For...
    5 KB (560 words) - 16:48, 18 February 2024
  • Thumbnail for Nerve tract
    a commissure, decussation, or neural pathway. A commissure connects the two cerebral hemispheres at the same levels, while a decussation connects at different...
    5 KB (542 words) - 15:58, 22 January 2024
  • Thumbnail for Pyramidal tracts
    cross over to the opposite side from which they originated, known as decussation. The axons that cross over move to the outer part of the medulla oblongata...
    16 KB (1,678 words) - 15:49, 19 May 2024
  • Thumbnail for Brainstem
    can be seen a decussation of fibers which marks the transition from the medulla to the spinal cord. The medulla is above the decussation and the spinal...
    22 KB (2,533 words) - 12:28, 23 June 2024
  • Thumbnail for Spinothalamic tract
    (hence the spinothalamic tract being part of the anterolateral system). Decussation usually occurs 1-2 spinal nerve segments above the point of entry. The...
    12 KB (1,407 words) - 05:34, 17 June 2024
  • Thumbnail for Optic chiasm
    (anatomy)). A midline crossing of nerves inside the brain is called a decussation (see Definition of types of crossings). In all vertebrates, the optic...
    15 KB (1,712 words) - 17:03, 3 July 2024
  • Thumbnail for Spinal cord
    enlargements within the spinal cord. There is no decussation in the lateral corticospinal tract after the decussation at the medullary pyramids. The anterior corticospinal...
    41 KB (4,971 words) - 17:09, 29 June 2024
  • Thumbnail for Internal arcuate fibers
    spinal nerves. Upon decussation (crossing over) from one side of the medulla to the other, also known as the sensory decussation, they are then called...
    2 KB (153 words) - 22:20, 14 August 2022
  • crosses the midline at its level of origin or entry (as opposed to a decussation of fibers that cross obliquely). The nine are the anterior commissure...
    3 KB (420 words) - 16:25, 19 April 2024
  • Thumbnail for Anterior corticospinal tract
    gray matter at the base of the posterior grey column.[citation needed] Decussation of pyramids. The motor tract. Berthold, Daniel Goude, C.-H. "Pyramidbanans...
    4 KB (386 words) - 16:46, 18 February 2024
  • Thumbnail for Axial twist theory
    'Χ,' chi). A decussation denotes a crossing of bundles of axonal fibers inside the central nervous system. As a result of such decussations: The efferent...
    37 KB (4,127 words) - 10:57, 5 July 2024
  • Thumbnail for Optic nerve
    postero-medially towards the optic chiasm, where there is a partial decussation (crossing) of fibers from the temporal visual fields (the nasal hemi-retina)...
    15 KB (1,891 words) - 23:59, 30 June 2024
  • Thumbnail for Chiasm (anatomy)
    kinds of crossings of nerve fibres. The chiasm is distinguished from a decussation, which is a crossing of nerve fibres inside the central nervous system...
    12 KB (1,394 words) - 13:13, 26 April 2024
  • Thumbnail for Ventral supraoptic decussation
    The ventral supraoptic decussation is the crossover (decussation) point for signals from the left and right eye, en route respectively to the right and...
    1 KB (104 words) - 06:37, 28 February 2022
  • Thumbnail for Medulla oblongata
    system. At the caudal part of the medulla these tracts cross over in the decussation of the pyramids obscuring the fissure at this point. Some other fibers...
    14 KB (1,621 words) - 04:24, 1 July 2024
  • Thumbnail for Upper motor neuron lesion
    gather in the internal capsule before crossing over to the opposite side (decussation) in the medullary pyramids and proceeding down the spinal cord to meet...
    4 KB (428 words) - 07:18, 7 September 2021
  • Thumbnail for Anatomical terms of neuroanatomy
    region of each side whereas a decussation connects different brain regions. The brainstem from the front, showing a decussation of the superior pedicle and...
    14 KB (1,610 words) - 16:58, 16 January 2024
  • Thumbnail for Midbrain
    tectum. The superior colliculi process some visual information, aid the decussation of several fibres of the optic nerve (some fibres remain ipsilateral)...
    17 KB (1,999 words) - 22:39, 30 May 2024
  • Thumbnail for Internal capsule
    base of the cerebral peduncle with the cerebrospinal fibers, undergo decussation and end in the motor nuclei of the cranial nerves of the opposite side...
    11 KB (1,261 words) - 19:12, 20 June 2023
  • Thumbnail for Anterior median fissure of the medulla oblongata
    constitute the pyramidal decussation. Some fibers, termed the anterior external arcuate fibers, emerge from the fissure above this decussation and curve lateralward...
    2 KB (154 words) - 22:45, 26 November 2018
  • Thumbnail for Weber's syndrome
    motor neuron findings. It is contralateral because it occurs before the decussation in the medulla. corticobulbar tract difficulty with contralateral lower...
    4 KB (263 words) - 07:49, 8 May 2024
  • Thumbnail for Phyllotaxis
    phyllotaxis. Anisophylly, a type of leaf size difference on horizontal shoots Decussation Fermat's spiral L-system Orixa japonica Parastichy Plastochron Three-gap...
    17 KB (1,742 words) - 13:27, 18 June 2024
  • Thumbnail for Orbicularis oris muscle
    fibers of the buccinator pass across the lips from side to side without decussation. Superficial to this stratum is a second, formed on either side by the...
    5 KB (646 words) - 17:31, 4 May 2024
  • Thumbnail for Contralateral brain
    'Χ,' chi). A decussation denotes a crossing of bundles of axonal fibres inside the central nervous system. As a result of such decussations: The efferent...
    23 KB (2,605 words) - 23:12, 18 May 2024
  • Thumbnail for Anterior grey column
    column Section of the medulla oblongata through the lower part of the decussation of the pyramids This article incorporates text in the public domain from...
    3 KB (324 words) - 19:41, 13 June 2024