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Lateral Funiculus
The most lateral of the bundles of the anterior nerve roots is generally taken as a dividing line that separates the anterolateral system into two parts. These are the anterior funiculus, between the anterior median fissure and the most lateral of the anterior nerve roots, and the lateral funiculus between the exit of these roots and the posterolateral sulcus. The lateral funiculus transmits the contralateral corticospinal and spinothalamic tracts. A lateral cutting of the spinal cord results in the transection of both ipsilateral posterior column and lateral funiculus and this produces Brown-Séquard syndrome.Kaplan Qbook - USMLE Step 1 - 5th edition - page See also * Funiculus (neuroanatomy) * Anterior funiculus * Posterior funiculus References Central nervous system {{Neuroanatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anterior Root Of Spinal Nerve
In anatomy and neurology, the ventral root of spinal nerve, anterior root, or motor root is the efferent motor root of a spinal nerve A spinal nerve is a mixed nerve, which carries Motor neuron, motor, Sensory neuron, sensory, and Autonomic nervous system, autonomic signals between the spinal cord and the body. In the human body there are 31 pairs of spinal nerves, one on each s .... At its distal end, the ventral root joins with the dorsal root to form a mixed spinal nerve. Additional images Image:Cervical vertebra english.png, Cervical vertebra Image:Medulla spinalis - Section - English.svg, Medulla spinalis Image:Gray675.png, A spinal nerve with its anterior and posterior. Image:Gray764.png, The motor tract. Image:Gray770-en.svg, Diagrammatic transverse section of the medulla spinalis and its membranes. Image:Gray796.png, A portion of the spinal cord, showing its right lateral surface. The dura is opened and arranged to show the nerve roots. Image:Gray799.svg, S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anterolateral System
The spinal cord is a long, thin, tubular structure made up of nervous tissue that extends from the medulla oblongata in the lower brainstem to the lumbar region of the vertebral column (backbone) of vertebrate animals. The center of the spinal cord is hollow and contains a structure called the central canal, which contains cerebrospinal fluid. The spinal cord is also covered by meninges and enclosed by the neural arches. Together, the brain and spinal cord make up the central nervous system. In humans, the spinal cord is a continuation of the brainstem and anatomically begins at the occipital bone, passing out of the foramen magnum and then enters the spinal canal at the beginning of the cervical vertebrae. The spinal cord extends down to between the first and second lumbar vertebrae, where it tapers to become the cauda equina. The enclosing bony vertebral column protects the relatively shorter spinal cord. It is around long in adult men and around long in adult women. The dia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anterior Funiculus
In the spinal cord, the most lateral of the bundles of the ventral root of spinal nerve, ventral nerve roots is generally taken as a dividing line that separates the antero-lateral region into two parts: an anterior funiculus (or anterior column), between the Anterior median fissure of the spinal cord, anterior median fissure and the most lateral of the ventral nerve roots; and a lateral funiculus, between the exit of these roots and the posterolateral sulcus of spinal cord, posterolateral sulcus. See also * Funiculus (neuroanatomy) * Lateral funiculus * Posterior funiculus References Central nervous system {{Neuroanatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anterior Median Fissure Of The Spinal Cord
The anterior median fissure of the spinal cord is a deep midline groove of the anterior spinal cord. It divides the white matter of the anterior spinal cord nearly in two. The spinal pia mater extends into the fissure to line the surfaces of the spinal cord. Anatomy It has an average depth of about 3 mm, but this is increased in the lower part of the spinal cord. It contains a double fold of pia mater. Its floor is formed by a transverse band of white matter - the anterior white commissure The anterior white commissure (ventral white commissure) is a bundle of nerve fibers which cross the midline of the spinal cord just anterior (in front of) to the gray commissure ( Rexed lamina X). A delta fibers (Aδ fibers) and C fibers carr ... - which is perforated by blood vessels on their way to or from the central part of the spinal cord. Relations The anterior median fissure provides a groove in which the anterior spinal artery sits. Clinical significance Imaging The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Posterolateral Sulcus Of Medulla Oblongata
The accessory, vagus, and glossopharyngeal nerve The glossopharyngeal nerve (), also known as the ninth cranial nerve, cranial nerve IX, or simply CN IX, is a cranial nerve that exits the brainstem from the sides of the upper Medulla oblongata, medulla, just anterior (closer to the nose) to t ...s correspond with the posterior nerve roots, and are attached to the bottom of a sulcus named the posterolateral sulcus (or dorsolateral sulcus). Additional images File:Human caudal brainstem posterior view description.JPG, Human caudal brainstem posterior view description References Medulla oblongata {{Neuroanatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brown-Séquard Syndrome
Brown-Séquard syndrome (also known as Brown-Séquard's hemiplegia, Brown-Séquard's paralysis, hemiparaplegic syndrome, hemiplegia et hemiparaplegia spinalis, or spinal hemiparaplegia) is caused by damage to one half of the spinal cord, i.e. hemisection of the spinal cord resulting in paralysis and loss of proprioception on the same (or ipsilateral) side as the injury or lesion, and loss of pain and temperature sensation on the opposite (or contralateral) side as the lesion. It is named after physiologist Charles-Édouard Brown-Séquard, who first described the condition in 1850. Causes Brown-Séquard syndrome may be caused by injury to the spinal cord resulting from a spinal cord tumor, trauma (such as a fall or injury from gunshot or puncture to the cervical or thoracic spine), ischemia (obstruction of a blood vessel), or infectious or inflammatory diseases such as tuberculosis, or multiple sclerosis. In its pure form, it is rarely seen. The most common cause is penetrating t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Funiculus (neuroanatomy)
A funiculus is a small bundle of axons (nerve fibres), enclosed by the perineurium. A small nerve may consist of a single funiculus, but a larger nerve will have several funiculi collected together into larger bundles known as fascicles. Fascicles are bound together in a common membrane, the epineurium. Funiculi in the spinal cord are columns of white matter. Examples include: * Anterior funiculus of the spinal cord * Lateral funiculus The most lateral of the bundles of the anterior nerve roots is generally taken as a dividing line that separates the anterolateral system into two parts. These are the anterior funiculus, between the anterior median fissure and the most lateral ... of the spinal cord * Posterior funiculus of the spinal cord See also * Funiculus separans References Neuroanatomy {{Neuroanatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anterior Funiculus
In the spinal cord, the most lateral of the bundles of the ventral root of spinal nerve, ventral nerve roots is generally taken as a dividing line that separates the antero-lateral region into two parts: an anterior funiculus (or anterior column), between the Anterior median fissure of the spinal cord, anterior median fissure and the most lateral of the ventral nerve roots; and a lateral funiculus, between the exit of these roots and the posterolateral sulcus of spinal cord, posterolateral sulcus. See also * Funiculus (neuroanatomy) * Lateral funiculus * Posterior funiculus References Central nervous system {{Neuroanatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Posterior Funiculus
Posterior may refer to: * Posterior (anatomy), the end of an organism opposite to anterior ** Buttocks, as a euphemism * Posterior horn (other) * Posterior probability The posterior probability is a type of conditional probability that results from updating the prior probability with information summarized by the likelihood via an application of Bayes' rule. From an epistemological perspective, the posteri ..., the conditional probability that is assigned when the relevant evidence is taken into account * Posterior tense, a relative future tense {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
