How To Use Medullary sheath In A Sentence
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B, a medullated nerve fiber at a node or constriction of Ranvier, the axis cylinder passes uninterruptedly from one segment into the other, but the medullary sheath is interrupted.
A Practical Physiology
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The central portion is named the axis-cylinder; around this is a sheath of fatty material, staining black with osmic acid, named the white substance of Schwann or medullary sheath, which gives to the fiber its double contour, and the whole is enclosed in a delicate membrane, the neurolemma, primitive sheath, or nucleated sheath of Schwann (Fig. 633) 12
IX. Neurology. 1. Structure of the Nervous System
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A, a medullated nerve fiber, showing the subdivision of the medullary sheath into cylindrical sections imbricated with their ends, a nerve corpuscle with an oval nucleus is seen between the neurilemma and the medullary sheath;
A Practical Physiology
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A, a medullated nerve fiber, showing the subdivision of the medullary sheath into cylindrical sections imbricated with their ends, a nerve corpuscle with an oval nucleus is seen between the neurilemma and the medullary sheath;
A Practical Physiology
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Surrounding the axis cylinder is a thick, whitish-looking layer, known as the _medullary sheath_, and around this is a thin covering, called the _primitive sheath_, or neurilemma.
Physiology and Hygiene for Secondary Schools
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In addition to these interruptions oblique clefts may be seen in the medullary sheath, subdividing it into irregular portions, which are termed medullary segments, or segments of Lantermann (Fig. 631); there is reason to believe that these clefts are artificially produced in the preparation of the specimens.
IX. Neurology. 1. Structure of the Nervous System