List of abbreviations
of micros-
specialist terms
explained in
English +

Every attempt was made to provide correct information and labelling, however any liability for eventual errors or incompleteness is rejected!

dieser Seite

Dr. med.
H. Jastrow

of use
Overview fusiform densitiy (Corpusculum densum):
Pages with explanations are linked to the text below the images if available! (Labelling is in German)
longitudinal section of a
smooth muscle cell (monkey)
smooth muscle cell,
actin filaments (monkey)
organelles + actin filaments
smooth muscle cell (monkey)
smooth muscle cell in
cross-section (monkey)
Corpuscula densa
longitudinal (human)
cross sectioned fusi-
form densities (human)
Fusiform densities or dense oval bodies (Terminologia histologica: Corpusculae densae) are electron-dense regions within the filaments of smooth muscle cells. The areas are about 500 nanometers (nm) in length and have a thickness of ~100 nm. They consist of densely packed actin filaments tighted together with alpha-actinin. They are stable structures of the cytoskeleton and resemble the Z-disks of striated muscle cells. They also resemble dense bodies with the difference that they are never attached to the cell membrane but lie in the interior of the cytoplasm.

--> smooth muscle cells, Area densa
--> Electron microscopic atlas Overview
--> Homepage of the workshop

Four images were kindly provided by Prof. H. Wartenberg; other images, page & copyright H. Jastrow.