Morphofunctional Properties of Pacinian Corpuscles

Ilyinsky, O. B.; Volkova, N. K.; Cherepnov, V. L.; Крылов, Б. В.

doi:10.1016/s0079-6123(08)64349-6

Cited by 7 publications

(2 citation statements)

References 22 publications

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“…Although the axon in the ostrich and emu sometimes appeared more round in transverse section (also described in the small Herbst corpuscles in the beak of the Japanese quail (Halata and Grim, ) oval shaped axons were also observed as described in other birds (Andersen and Nafstad, ; Halata, ; Gottschaldt et al, ; Gottschaldt, , Halata and Grim, ). In Pacinian corpuscles, the oval shape of the axon reflects the ability of the corpuscle to detect direction (Ilyinsky et al, ). Depolarization occurs with an increase in surface membrane area (deformed along the shorter axis) and hyperpolarization occurs with a decrease in surface membrane area (deformed along the longer axis) (Ilyinsky et al, ).…”

Section: Discussionmentioning

confidence: 99%

“…In Pacinian corpuscles, the oval shape of the axon reflects the ability of the corpuscle to detect direction (Ilyinsky et al, ). Depolarization occurs with an increase in surface membrane area (deformed along the shorter axis) and hyperpolarization occurs with a decrease in surface membrane area (deformed along the longer axis) (Ilyinsky et al, ). Thus the Herbst corpuscles in the ostrich and emu with round axons are most likely not direction sensitive.…”

Section: Discussionmentioning

confidence: 99%

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Morphological Features of Herbst Corpuscles in the Oropharynx of the Ostrich (Struthio camelus) and Emu (Dromaius novaehollandiae)

Crole

Plessis

Soley

2014

The Anatomical Record

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The distribution of Herbst corpuscles in the oropharynx of the ostrich and emu has recently been documented. However, although the morphology of these mechanoreceptors is well known in neognathous birds, little structural information is available on the Herbst corpuscles of ratites. Tissue sections from those regions of the oropharynx known to possess a high concentration of Herbst corpuscles were sampled from ostrich and emu heads collected after slaughter and prepared for light and transmission electron microscopy. Intra-oral Herbst corpuscles in the ostrich and emu displayed the same basic components (capsule, outer zone, inner core and axon) described in neognathous birds. However, some important differences were observed, notably, the presence of myofibroblasts in the capsule, sensory cilia in cells of the outer layers, a relatively larger, less organized outer zone and narrower inner core, and variations in the shape of the axon. The previously unreported presence of myofibroblasts in the capsule possibly indicates its ability to contract, thus altering the tension of the capsule, which in turn has implications for the conduction of vibrational stimuli. The sensory cilia in the myofibroblasts of the capsule bordering the outer zone, and in the fibroblasts of the outer zone itself, may play a regulatory role in controlling the contraction of the capsule. Such a function has not previously been reported for Herbst corpuscles in any species of bird. Anat Rec, 298:783-796, 2015. V C 2014 Wiley Periodicals, Inc.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Morphological Features of Herbst Corpuscles in the Oropharynx of the Ostrich (Struthio camelus) and Emu (Dromaius novaehollandiae)

Crole

Plessis

Soley

2014

The Anatomical Record

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Irido-corneal angle of mammalian eyes: Comparative morphology of encapsulated corpuscles in odontocete cetaceans

Wickham

1980

Cell Tissue Res.

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A study of the structure and distribution of encapsulated corpuscles (corpuscles of Rochon-Duvigneaud) in the irido-corneal (anterior chamber) angle in 42 adult eyes from nine species of odontocete cetaceans representing each of the five families in this group indicates a diversity of form and function. The corpuscles occur as signle features or multiple groupings with each species having a distinct pattern. No definite phylogenic or environmental patterns were seen although sometimes there were similarities among related genera. The neural structure of the angle suggests that these receptors probably respond to a variety of stimuli including intraocular pressure, vitreous displacements, external muscular force applied to the sclera and cornea, and changes in the volume of the massive iris/choroid vascular system.

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The development of Pacinian corpuscles

Zelená

1978

J Neurocytol

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Morphofunctional Properties of Pacinian Corpuscles

Cited by 7 publications

References 22 publications

Morphological Features of Herbst Corpuscles in the Oropharynx of the Ostrich (Struthio camelus) and Emu (Dromaius novaehollandiae)

Morphological Features of Herbst Corpuscles in the Oropharynx of the Ostrich (Struthio camelus) and Emu (Dromaius novaehollandiae)

Irido-corneal angle of mammalian eyes: Comparative morphology of encapsulated corpuscles in odontocete cetaceans

The development of Pacinian corpuscles

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