Posted on

Biology of Spermatogenesis and Spermatozoa in Mammals by Sardul S. Guraya

By Sardul S. Guraya

The spermatogenesis and spermatozoa of mammals are of funda psychological curiosity to a large choice of educational and clinical disci plines; zoologists sustain curiosity in comparative biology of sper matogenesis and spermatozoa in several teams of mammals for selecting their phylogenetic interrelationships. hence, prior to now 15 years, a wealth of studies and papers were released at the morphology (including ultrastructure), histochemistry, automobile radiography, biochemistry (including immunology), and mobile physiol ogy of the seminiferous epithelium together with Sertoli cells, spermato genesis and spermatozoa in mammals. Hormonal law of sper matogenesis additionally types the topic to various reviews. study during this zone of reproductive biology maintains at a extraordinary fee, and new and important details looks day-by-day in quite a lot of journals, released symposia, and expert studies. The scattered nature of this knowledge makes it tough for a scientist, pupil or andrologist to move via even a small fraction of those guides at the biology of spermatogenesis and spermatozoa and so receive a common oversight of present task and new advances. truly, little or no try out has been made formerly to summarize and inte grate the colossal details which has turn into on hand because of use of recent innovations of microscopy, floor topography, histo chemistry, autoradiography, biochemistry, biophysics, immunology, molecular biology, in vitro structures, and so on. Much-needed interdisciplin ary method in biology of seminiferous epithelium, spermatogenesis and spermatozoa is especially tough and therefore missing.

Show description

Read or Download Biology of Spermatogenesis and Spermatozoa in Mammals PDF

Best physiology books

Physiology of Behavior (11th Edition)

<P style="MARGIN: 0px"> the most up-tp-date, entire, and teachable textual content for behavioral neuroscience
<P style="MARGIN: 0px"> 
<P style="MARGIN: 0px">Thoughtfully equipped, body structure of habit offers a scholarly but obtainable portrait of the dynamic interplay among biology and behaviour. shut collaboration among the writer and a skilled artist has led to appealing, exact, and pedagogically potent illustrations in each bankruptcy.   
<P style="MARGIN: 0px"> 
<P style="MARGIN: 0px">No different writer compares to Carlson in terms of completely updating study. This revision accommodates the newest discoveries in behavioral neuroscience, and contains over four hundred new references. built-in for the 1st time with MyPsychLab, featuring an interactive digital mind, bankruptcy learn plans, flashcards, and different assets, Carlson's eleventh version deals scholars an immersive and fascinating adventure.  
<P style="MARGIN: 0px">  
<P style="MARGIN: 0px"> a greater educating and studying event
<P style="MARGIN: 0px">This application will supply a greater instructing and studying experience— for you and your scholars. Here’s how:
<UL> * customize studying - the recent MyPsychLab offers confirmed ends up in supporting scholars be successful, offers enticing stories that customize studying, and is derived from a relied on companion with academic services and a deep dedication to assisting scholars and teachers in attaining their targets. * increase severe pondering — part Summaries with proposal Questions support scholars try their knowing of the fabrics. * interact scholars — a detailed collaboration among the writer and a skilled artist has led to attractive, actual, and pedagogically powerful illustrations in each bankruptcy.   * discover learn — In gentle of the swiftly evolving box of behavioral neuroscience, over four hundred new references are integrated during this version. * help teachers — With assets resembling Instructor’s guide, try out financial institution, hugely visible PowerPoint Slides, and for the 1st time ever, the recent MyPsychLab with ClassPrep, teachers have every thing they should educate behavioral neuroscience. All of those fabrics can be found to be packaged with the textual content upon request.
</UL> <P style="MARGIN: 0px"> be aware: MyPsychLab doesn't come immediately packaged with this article. to buy MyPsychLab, please stopover at www. mypsychlab. com otherwise you should purchase a ValuePack of the textual content + MyPsychLab (at no extra cost). ValuePack ISBN-10: 0205889786 / ValuePack ISBN-13: 9780205889785.

Biology and Anatomy & Physiology Helps: Tissues

The Biology and Anatomy & body structure is helping sequence is designed to supply a evaluation of the ambitions and vocabulary lined through many teachers. This sequence is in note-like structure to complement any pupil examine advisor and gives a self attempt on the finish of every textual content to aid with fabric overview of the subject coated.

Extra resources for Biology of Spermatogenesis and Spermatozoa in Mammals

Example text

Sertoli cells in culture also secrete a few other specific proteins and a large number of more or less unidentified proteins (Rommerts et al. 1978, Ritzen et al. 1981, Wright et al. 1983).

1983) have demonstrated Sertoli cell maintenance of germ-cell viability. FSH and testosterone receptors but not LH receptors have been demonstrated in Sertoli cells (Dufau et al. 1973, A. Steinberger and E. Steinberger 1977, Courot et al. 1979, Courot 1980, Ouraya 1980, Risbridger et al. 1981, Ritzen et al. 1981, Reichert et al. 1982, Parvinen et al. 1983, Tindall et al. 1985). FSH binds to specific receptors on the Sertoli cell plasma membrane, stimulates adenylate cyclase, activates soluble cAMP-dependent protein kinase, and stimulates RNA and protein synthesis.

Actually, the interactions between Sertoli cells and differentiating male germ-cells, which certainly occur at the level of their plasma membrane, are dynamic and highly ordered with regard to the timing and spatial arrangements of successive waves of cellular differentiation. Germ-cells multiply at a rapid rate, and grow and shift along the sides and apex of the Sertoli cell. The shape of the latter therefore must alter continually to accommodate cyclic events associated with spermatogenesis. The Sertoli cell, having extensive plasma membrane surface area, shows complex and elaborate surface relationships to the germinal cells, supporting the concept of extensive metabolic exchanges between it and germ-cells, which take place at the cell's surface.

Download PDF sample

Rated 4.63 of 5 – based on 46 votes