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Digitale Medien

The morphology of the Limulus visual system (1975)

Fahrenbach, Wolf H. ; Griffin, Audrey J.

Springer

Cell & tissue research 159 (1975), S. 39-47

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Details

ISSN: 1432-0878

Schlagwort(e): Limulus ; Ocellus ; Connectivity

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Medizin

Notizen: Summary An ocellus of the horseshoe crab, Limulus polyphemus, has been serially sectioned for light and electron microscopy, its sensory cells have been indexed, and the interconnections of a third of these traced. The ocellus contains 155 retinula cells and 26 arhabdomeric cells, which are secondary sensory neurons. Of these, 55 retinula cells constitute 7 quasi-ommatidial assemblages, each innervated by at least one and a total of 9 arhabdomeric cells. When known electrotonic coupling patterns are compared with gap-junctional connections, retinula cells sensitive to visible or ultraviolet light can be tentatively identified. Retinula cell axons contribute collaterals to a synaptic plexus, in which the arhabdomeric cells apparently do not participate.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00231993

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