What's the difference between fascicle and fasciculus?

Fascicle


Definition:

  • (n.) A small bundle or collection; a compact cluster; as, a fascicle of fibers; a fascicle of flowers or roots.

Example Sentences:

  • (1) In some areas, the tumor shows a striking resemblance to Kaposi's sarcoma; criss-crossing fascicles of spindle cells are interspersed with narrow vascular spaces, but PAS-positive hyaline globules are absent.
  • (2) Pain induced by INMS in muscle nerve fascicles was projected to the muscles innervated by that fascicle and, in most instances, to areas beyond the muscular receptive field.
  • (3) with 2-6 times increased stimulation strength produced skin vasodilatation restricted to the innervation zone of the stimulated nerve fascicle.
  • (4) Total myelinated fiber density was high in the small fascicles, and it decreased as the fascicles became larger in size, approaching the values observed in the large peripheral nerves.
  • (5) Theories for the decreased antigenic reaction of nerve fascicles are proposed.
  • (6) the solitary complex and the superficial rostral cuneate fascicle, were found to contain neuronal perikarya displaying a normally weak staining which was markedly enhanced after monoaminoxidase (MAO) inhibition.
  • (7) The superior fascicle is whitish, dimmed and frequently thinner than the others and was classified under 4 patterns, according to its insertion.
  • (8) Without endocardial mapping many of these tachycardias would have been incorrectly identified as originating in the fascicles or epicardium.
  • (9) Individual fibers of all classes appeared to innervate fascicles of smooth muscle in the mesometrium of the uterine horn.
  • (10) Most examples measure less than or equal to 0.5 cm and are composed of a partially encapsulated mass of bland Schwann cells and innumerable tiny axons arranged in interlacing fascicles.
  • (11) Second, the percentages of subjects with 1 or more fascicles exceeding the proposed threshold were as follows: 45.8% for the four-component, 28.8% for the three-component, and 32.7% for the two-component contracture test.
  • (12) They aggregate to form fascicles that lie among somatic axons, being separated from them.
  • (13) The ipsilateral fascicles projected to almost all the above mentioned nuclei, but these projections were comparatively sparse.
  • (14) Biopsied fascicles of cutaneous nerves from clinically affected (forearm) and from clinically unaffected (leg) regions permitted a comparison of well-advanced and early pathologic lesions, respectively.
  • (15) Most often, however, brain stem lesions also involve structures surrounding the ocular motor nuclei or fascicles, sometimes leading to characteristic eponymic syndromes.
  • (16) Microelectrodes were inserted percutaneously into a fascicle of the peroneal nerve to measure sympathetic discharge to muscle.
  • (17) Ethylenethiourea (ETU), at greater than or equal to .5 mM concentrations, caused in monocell layers in vitro a necrosis of neuronal cells and a marked depression in the formation of neurites and fascicles without any noticeable change in the non-neuronal cells.
  • (18) At highest risk were 186 patients with blocks involving the right bundle and at least one fascicle of the left bundle which were not documented on prior electrocardiograms.
  • (19) Grafts with myotubes at right angles to the nerve fascicles supported nerve regeneration but at a slower rate.
  • (20) Microneurographic techniques were used to isolate single afferent axons within cutaneous and motor fascicles of the median and ulnar nerves at the wrist in thirteen subjects.

Fasciculus


Definition:

  • (n.) A little bundle; a fascicle.
  • (n.) A division of a book.

Example Sentences:

  • (1) Recordings were made from secondary vestibular axons in the medial longitudinal fasciculus (MLF) of barbiturate-anesthetized squirrel monkeys.
  • (2) In lampreys, the majority of HRP-labeled cells were located along the length of the brainstem reticular formation in the inferior, middle, and superior reticular nuclei of the medulla, mesencephalic tegmentum, and nucleus of the medial longitudinal fasciculus.
  • (3) In the brain stem, dense bundles of the descending fibres were found in the central and the medial tegmental tracts and in the medial longitudinal fasciculus.
  • (4) The potential role of the habenula in the transsynaptic regulation of the activity of ascending dopaminergic systems has been investigated in the rat by studying the effect of an acute interruption of impulse traffic in the diencephalic conduction system (stria medullaris-habenula-fasciculus retroflexus) and of pharmacological manipulation of various neurotransmitter systems in the interpeduncular nucleus on dopamine metabolism in several dopaminergic projection fields.
  • (5) Magnetic resonance imaging clearly showed a rostral lesion of the paramedial pontine reticular formation and the medial longitudinal fasciculus.
  • (6) Most of the giant PnC neurons sent their axons caudally into the medial longitudinal fasciculus and can therefore be regarded as reticulospinal neurons.
  • (7) Its axons take an ascending direction to the posterior commissure, and not to be medial longitudinal fasciculus as has been conventionally described.
  • (8) This latter pathway constitutes a part of the classically described arcuate fasciculus.
  • (9) Anatomopathologic findings in the two cases show that the OPT runs in front of the Medial Longitudinal Fasciculus or in the lateral tegmentum and that it decussates, at least once, below the upper pons.
  • (10) Because of the more caudal position of the amygdala in the rabbit, the comparable fasciculus passed directly caudally and exhibited only slight arching.
  • (11) Light microscopic examination showed the main stem axons to be lateral to the medial longitudinal fasciculus, and terminal boutons were in contact with ipsilateral identified MR motoneurons (Furuya and Markham: Exp.
  • (12) In the cat and dog, only the posterior fibers of the superior fasciculus were detected.
  • (13) Specifically, the labeled primary afferent axons and their collateral branches were found in the fasciculus cuneatus, and in laminae I, II, III, and IV of the dorsomedial aspect of the dorsal horn.
  • (14) The metastatic lesions in both paramedian pontine reticular formation and medial longitudinal fasciculus were considered to be causative of her one-and-a-half syndrome.
  • (15) The neurons had significantly decreased conduction velocities, both in the fasciculus gracilis and in the periphery.
  • (16) These lesions were followed by segregation of the nucleolus, axon reaction-like changes in the cytoplasm and axonal degeneration of both peripheral axons in the sural nerve and central axons in the fasciculus gracilis.
  • (17) Fewer labelled cells occurred in the mesencephalon and rhombencephalon but groups were seen in the region of the central grey, lateral lemniscus, parabrachial and tegmental nuclei, medial longitudinal fasciculus and nucleus of the solitary tract.
  • (18) Most medullary BRN project to the spinal cord via the medial longitudinal fasciculus (mlf) and sulcomarginal fasciculus.
  • (19) Increases of over 100% were seen in the superior colliculus, nucleus of the optic tract, and portions of the accessory optic system (medial and dorsal terminal nuclei, and the inferior fasciculus).
  • (20) Both forms are organized either by a fasciculus of axons, or by single axons, and they innervate either single myocytes, or their group.

Words possibly related to "fasciculus"