morphological and ultrastructural study of the ventral nerve cord in branchiobdella pentodonta whitman (annelida, oligochaeta). | the ventral nerve cord of branchiobdella pentodonta consists of paired ganglia containing three different types of neurons, a central neuropil showing characteristic synapses and of an intersegmental apparatus made up of two large lateral connectives and a smaller ventral one. some remarkable differences exist between the ventral nerve cord and that found in other oligochaetes; these include the presence of a large dorsal blood vessel, two dorsal muscular cells per metamere, and supportive glial ... | 1978 | 627629 |
the fine structure of the myoneural junctions in the body wall muscles in branchiobdella pentodonta whit. (annelida, oligochaeta). | the ultrastructure of the myoneural junctions in the body wall muscles has been studied in branchiobdella pentodonta whit. a single junctional type has been found. within the terminal axon there are two types of vesicles, which differ in number, size and electron opacity. the junctional gap contains the basement membrane. the post-junctional membrane displays concave patches on which slender projections arising from the outer lamina of the sarcolemma extend into the junctional gap. these concave ... | 1975 | 1155793 |
[histochemical and ultrastructural studies of the cocoon of branchiobdella pentodonta with (annelida, oligochaeta)]. | | 1975 | 1220735 |
observations on the oocyte ultrastructure and vitellogenesis of branchiobdella pentodonta whitman. | | 1972 | 4656931 |
[preliminary electron-microscopic observations on vitello-genesis in branchiobdella pentodonta whit. (oligochaeta)]. | | 1971 | 5167323 |
architecture of the t-system in helical paramyosin muscles of an annelid (branchiobdella). | tannic acid impregnation has revealed the existence of a t-system in the helical fibers of branchiobdella pentodonta (annelida, clitellata). t-tubules are l-shaped inside the fiber, within the plane of the i-band: after a short horizontal tract they run longitudinally for a long tract keeping contact with many sarcoplasmic reticulum cisternae and forming dyads. the presence of a t-system in this annelid, the only one demonstrated up to now in annelids, is to be ascribed to the thickness of the c ... | 1980 | 7209961 |
morphological and ultrastructural aspects of branchiobdella pentodonta whit. (annelida, oligochaeta) suckers. | the muscular system in the posterior sucker of branchiobdella pentodonta whit. has circular, longitudinal and radial fibers. in the anterior sucker, which has circular and longitudinal fibers, the muscle system is scarce. concentric fibers are found around the mouth. in both suckers the glandular element form voluminous complexes secreting mucus for attachment to the substrate. suckers show neuromuscular junctions and three distinct types of neuroglandular junctions: one with typical neurosecret ... | 1981 | 7299828 |
[morphological observations on the sperm of branchiobdella pentodonta whitman carried out by means of the electron microscope]. | | 1962 | 13968740 |
[on the fine structure of nematospermia of branchiobdella pentodonta whitman studies with the electron microscope]. | | 1963 | 13968741 |
[observations on the morphology and fine structure of the flagellate sperm of branchiobdella pentodonta whitman examined under the electron microscope]. | | 1963 | 14010274 |
[notes on spermiogenesis in branchiobdella pentodonta whitman]. | | 1963 | 14057999 |