By Bjorn Afzelius, Björn A. Afzelius
The sensible Anatomy of the Spermatozoon is the twenty third quantity of the sequence Wenner-Gren middle foreign Symposium sequence, documenting the complaints of the second one overseas Symposium on Comparative Spermatology, held in August 1973.
This quantity almost always makes a speciality of the knowledge of the early occasions at fertilization and the preliminaries of this organic approach. this article particularly tackles the sperm at fertilization of decrease animals and mammals, sperm motility and variety, and spermatogenesis. This publication concludes with discussions on capacitation and maturation of mammalian spermatozoa.
This compendium could be precious to morphologists, physiologists, immunologists, and biochemists, in addition to to academicians drawn to the research of practical anatomy of the spermatozoon.
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Additional resources for The Functional Anatomy of the Spermatozoon. Proceedings of the Second International Symposium, Wenner–Gren Center, Stockholm, August 1973
Example text
LOEWENSTEIN, W . R . and K A N N O , Y . , Studies o n an epithelial (gland) cell junction. / . Cell Biol. 2 2 , 5 6 5 - 8 6 (1964). 1 5 . N I C A N D E R , L. and SJÔDÉN, L, A n electron microscopical study o f the acrosomal complex and its role in fertilization in the river lamprey, Lampetra fluviatilis. J. Submicr. Cytol. 3 , 3 0 9 - 1 7 ( 1 9 7 1 ) . 1 6 . NIIJIMA, L. and D A N , J . , The acrosome reaction in Mytilus edulis. I I . Stages in the reaction, observed in supernumerary and calcium-treated spermatozoa.
7). Both portions move apart. The mitochondria are unchanged. By eversion of the undulating membrane the flagellum and the flagellar rod have been transferred into the cytoplasm. The resulting vesicle begins to break up into small blebs with a fibrous content. In the 30-minutes stage the chromosomes of the female pronucleus seem to be more condensed than previously.
The acrosome (Pl. I, figs. 2-4) is a membrane-bounded vesicle. It is spherical except for a shallow invagination or indentation with a low irregular rim at the basal end and a bubblelike protrusion at the apex. Its contents are regionally differentiated in the following way. A bulbous mass of fine reticulate material extends inward from the basal indentation. A small sphere of very homogeneous substance (fig. 3) lies near the inner end of this mass. A very thin layer of dense material lines the basal two-thirds of the membrane except at the indentation but distally the membrane is unlined (figs.