 Back
Research Article
ScienceAsia 25 (1999) : 137-142 |doi: 10.2306/scienceasia1513-1874.1999.25.137
The Ultrastructure of Neurons and Neuroglia
in the Cerebral and Pleuro-Pedal Ganglia
of Haliotis asinina Linnaeus
Maleeya Kruatrachuea, Amporn Thongkukiatkulb, Prasert Sobhonc, E. Suchart Upathama,
Chaitip Wanichanonc, Prapee Sretarugsac, Yaowaluk Chitramvonga and Vichai Linthongc
ABSTRACT: The ultrastructure of neurons and neuroglia in the cerebral and pleuro-pedal ganglia of
Haliotis asinina are described. There are four types of neurons (NR1-4) and three types of neuroglia.
(NG1-3). The NR1, which is the largest nerve cell, has a round nucleus with a thin rim of heterochromatin
attached to the nuclear envelope. The cytoplasm contains numerous rough endoplasmic reticulum,
mitochondria, but only a few small elementary granules. The nuclei of NR2 , NR3 and NR4 have increasingly
condensed heterochromatin. The cytoplasm of these cells contain relatively few organelles such as rough
endoplasmic reticulum, mitochondria and elementary granules. The NG1 is spindle-shaped with little
perinuclear cytoplasm. The NR2 and NG3 are highly ellipsoid in shape. The cytoplasm of NG1 and NG3 is very thin and contains ribosomes, a few rough endoplasmic reticulum and mitochondria. The cytoplasm
of NR2 is extremely thin and contains only ribosomes. There are no elementary granules in the neuroglia.
Download PDF
a Department of Biology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand.
b Department of Biology, Faculty of Science, Burapha University, Chonburi 20131, Thailand.
c Department of Anatomy, Faculty of Science, Mahidol University, Bangkok 10400, Thailand.
Received 11 Mar 1999
|
