Download Spermiogenesis by David Phillips (Auth.) PDF

By David Phillips (Auth.)

Show description

Read or Download Spermiogenesis PDF

Best urology books

Female Urology, Urogynecology, and Voiding Dysfunction

Seriously illustrated for transparent navigation and knowing of anatomical websites, surgical recommendations, and reconstructive systems, this reference experiences the surgical and nonsurgical evaluate and administration of varied problems affecting lady urinary and pelvic health-collecting priceless thoughts, directions, and top practices from over a hundred expert gurus for specialist advice within the remedy of urinary incontinence, pelvic organ prolapse, and different dysfunctions.

The Dementias: Early Diagnosis and Evaluation

The single consultant to concentration totally on present molecular equipment of prognosis and early degree assessment, this reference offers the most recent thoughts and applied sciences for dementia identity and overview, together with neuropathological ideas, neuropsychological assessments, biomarkers, CT, MRI, useful MRI, puppy, and SPECT.

Atlas de cirugía urológica laparoscópica

Atlas de cirugía laparoscópica urológica donde se describe de forma pormenorizada, en los 29 capítulos de los angeles obra, diferentes procedimientos quirúrgicos en urología que se realizan con esta técnica, así como l. a. descripción de las bases técnicas en cirugía laparoscópica, implicaciones anestésicas cardiopulmonares de los angeles utilización del fuel CO2, complicaciones derivadas de los angeles técnica; se añaden, además, varios capítulos dedicados a cirugía laparoscópica en pediatría, empleo de los angeles robótica y un último capítulo dedicado al desarrollo del acceso endoscópico subcutáneo para los angeles disección ganglionar inguinal en cáncer de pene, una submodalidad de los angeles laparoscopia, related a l. a. utilizada en l. a. cirugía endoscópica de tiroides, paratiroides y en l. a. linfadenectomía axilar en cáncer de mama.

Additional info for Spermiogenesis

Sample text

Therei sa smallrin g centriol ea tth ebaseo fth eflagellum. Youn gspermatido fth estinkbu gEuchistus. 4 2ha sbee ntransecte d throug hth eannulus,revealin ga bipartitestructure. I nlongitudinalsections,th eannulu s appear sa stw odensedot so neithersid eo fth eflagellumwit hth eles sconspicuousflocculentmaterialtrail ingperipherally(se eFig . Late rth eannulusmove s downth eaxia lfilament complexunti li tcome st oth e fibrous sheathwher ei tstops,forminga boundary be tweenth emidpiecean dprincipal piece.

A matur espermatozoono fth ejellyfis h Naustihoe. I nthi sspecies,a nelaboratestructurei sassociatedwit hth edista lcentriole. Th e9 + 2 flagellumha sn o accessor ystructures,an da smal l numbero f mitochondria ,generallyfour ,ar elocateddi rectly behin dth ehea di na radia larray . Th e proxima l par to fth etai lha sa peculiarhair y coatconsistingo fslenderfibrils. (F )Cros ssec tiono fth etai l a tth eleve lo fth een dpiece. Ultrastruct. Res. Afzeliu s andFranzen. Th enec kregio no f squirre lspermatozoai sparticularlybroa d andlong .

The ring reaches the posterior end of the nucleus at about the time that nuclear condensation is completed; then both the ring and its microtubules disappear. In Fig. 24, the large annulus with attachment to the cell membrane has yet to migrate posteriorly and is still at the posterior end of the neck. The complicated events that occur during the morphogenesis of the neck have been followed in mammals (Fig. 23) (49), insects (32), amphibians (82), and the earthworm (7). Figure 24 shows a developing neck of the Chinese hamster sperm.

Download PDF sample

Rated 4.53 of 5 – based on 37 votes