... North American species (Dirks and Sternburg 1972) In the present work, the morphology of themalereproductive system, the spermatozoa and the number of spermatozoa per cyst were described for ... al 2005a) is therefore common among the social Hymenoptera In these species, the process of testis degeneration begins after the migration of the spermatozoa to the seminal vesicles The same process ... Histology of themalereproductivesystem of Polistes vesicolor D-E Photomicrograph of the spermatozoa and of the nucleus stained with DAPI, respectively A Longitudinal section from the region of the...
... in malereproductivesystem of the adult rat To identify the cells responsible for GSSG reduction, an attempt was made to determine the localization of GR in themalereproductivesystem of the ... localization in themalereproductivesystem of the adult rat (Fig 2) Epithelia from the epididymis, vas deferens, seminal vesicles, and prostate glands were strongly stained with the GR antibody In the ... reductase was also detected in the epithelia of themale genital tract In addition, glutathione S-transferase is present in themalereproductivesystem [45] Thus, the abundant expression of GR...
... MaleReproductiveSystemMaleReproductive Anatomy and Physiology • Testis • Epididymis • Vas deferens • Seminal vesicle • Prostate • Bulbourethral • Ejaculatory duct • Urethra • Penis MaleReproductive ... Prostaglandins in semen: • Decrease the viscosity of mucus in the cervix • Stimulate reverse peristalsis in the uterus • Facilitate the movement of sperm through the female reproductive tract • Clotting ... Bulbourethral • Ejaculatory duct • Urethra • Penis MaleReproductive Anatomy TheMaleReproductiveSystem in Anterior View The Structure of the Testes Spermatogenesis • Takes about 74 days • Seminiferous...
... In the light microscope the spermatozoon appears to have only two parts: the head and the tail In the electron microscope, the tail can be subdivided further into the neck, the middle piece, the ... migrate in embryonic life to the gonadal ridges They comprise the bulk of the cells in the adult seminiferous tubule These form the other major category of cell types in the seminiferous tubules ... of the future sperm head The Cap Phase The acrosomal vesicle grows and forms the head cap that covers the anterior two third of the nucleus The two centrioles assemble at the caudal pole of the...
... covering epithelia found in themalereproductive systems of horses [9], bulls [1], and rats [2] The present study is largely consistent with these studies There is a general agreement that in the thoroughbred ... different The functional role of each lectin needs further study Taken together, these results suggest that covering epithelia have a specific glycoprotein in thereproductivesystem of male horses, ... changes (Fig 1) In the testis, SBA (Fig 2B), WGA (Fig 2E), and UEA-1 (Fig 2F) were specifically detected in the epithelial cells Fig Histological findings in themalereproductivesystem of thoroughbred...
... h_development/egg_structure.html I II III IV V MaleReproductivesystem Female Reproductivesystem Sex Determination Modes of reproduction Mating Sex Determination Nearly all are Bisexual (males & females) Many species ... Amphitokous: Both male and female produced (Thysanoptera) Hermaphroditic: Each individual has both reproductive sets I II III IV V MaleReproductivesystem Female Reproductivesystem Sex Determination ... female in copula Females mount each other to attract males Males disrupt female pseudocopulation Experimentally, males just as likely to mate with mounting female as with mounted female! Harari and...
... ỐNG SINH TINH SEMINIFEROUS TUBULES Ngồi bao mơ liên kết Màng đáy Biểu mô tinh (seminiferous epithelium) cấu tạo loại tế bào: tế bào Sertoli (tế bào nâng đỡ) tế bào dòng tinh (spermatogenic cells) ... bào đáy Tuyến hành niệu đạo Là biểu mơ tuyến kiểu ống túi Lót biểu mơ trụ đơn Tuyến niệu đạo Dọc theo niệu đạo dương vật tuyến kiểu túi tiết nhầy 20 21 Spermatids remain attached during maturation...
... magnification, ×40 Effects of tributyltin chloride on thereproductivesystem in pubertal male rats 33 Fig The changes in serum testosterone levels in themale rat following daily oral treatments with ... of age The dose volume was 1.5 ml/kg B.W The animals were sacrificed on the next day of final treatment Pathological evaluations: On the sacrifice day, rats were anesthetized using ethyl ether ... the seminal vesicle of rats, that is, the vesicles were narrowed and occupied with epithelial cells (Fig 4) The treatment of methyltestosterone did not show any histopathological changes in the...
... on thereproductive system, our results suggest that daily intake of genistein has no observable detrimental effects on malereproductivesystemThe present study extend our knowledge of the ... everyday with the test compounds for weeks under the casein-based AIN-76A diet (Harlan Teklad, Madison, WI, USA) Animals were sacrificed under anesthesia with ethyl ether, and their reproductive ... Meanwhile, data for the exposure to genistein at adult stage is very limited The objective of the present study was to evaluate whether genistein causes adverse effects on reproductivesystem as exposed...
... trained; these are the most timeconsuming and expensive studies as the vast majority of baby boys 27 in the study will not have the disorders Finally, the larger the number of boys studied, the more ... exposure Male Reproductive Health Disorders and the Potential Role of Environmental Chemical Exposures Overview of prevalence and trends in malereproductive health disorders Thereproductive ... edge of the glans or to the top of the penile shaft In moderate cases the meatus is located lower down the shaft and in severe cases lower still and perhaps even in the perineal region, the latter...
... when I had the pill, he used to act out and ask me why I am using them […] Then, there was another time I started using the Ring [the NuvaRing, a hormone-releasing ring placed in the vagina to ... abortion in the 5th month of the pregnancy Not all women did what their partners wanted them to do—some had abortions when their partners wanted them to have the child; some had children that their ... be unidirectional the modified arrows are circled in the figure We moved infertility from the box on thereproductive outcomes of IPV and reproductive control to the box on reproductive organ...
... shows the reported locations for estrogen synthesis in the adult malereproductivesystem from several species Early studies reported that the primary source of estrogen in the immature male was the ... development was harmful Then, in the decade of the 90's new discoveries in themale led to the hypothesis that estrogen not only has important functions in the adult malereproductive tract, but that ... throughout themalereproductive tract, but particularly ERα that is localized in the efferent ductule epithelium, where its expression is more abundant than even the female reproductive tract In the...
... the corona radiata) around the oocyte The midpiece of the sperm is derived from the mitochondria and other metabolic organelles of the cell, and the flagellum is derived from the centrioles The ... the female oocyte The nucleus of the cell becomes the head of the sperm, and the lysosomes become the acrosome (See Figure 28.9) The acrosome contains digestive enzymes in order to digest the cumulous ... in the epididymis In spermiogenesis all non-essential components of the spermatids are lost in order that the sperm have only the chromosomes and the machinery required to propel them to the...
... occur in men Breast cancer is the most common type of cancer in women and is the second leading cause of death by cancer in women, following only lung cancer In 2000, the American Cancer Society ... new cases of breast cancer were diagnosed in the United States The average woman at age 30 years has chance in 280 of developing breast cancer in the next 10 years This chance increases to in ... trophoblast and endometrum which is now called the chorion •Chorionic villi contact maternal blood supply •becomes an endocrine gland: •HCG (similar to LH) maintains the CL for months •Later, estrogen and...
... increased the frequencies of chromosomal aberration in the presence or absence of S9 mixture Moreover, the cells treated with 10 or 50 mM of acrylamide further increased the frequencies in the presence ... under the extreme condition, which is a dose of acrylamide at 60 mg/kg/days In summary, we have evaluated the genotoxicity and the toxicological effects of acrylamide on reproductivesystem in male ... histopathological changes in the seminiferous tubules (Fig 5B) There were thickening and multiple layering of the tubular endothelium, degeneration of germ cells, and the formation of many multinucleated...
... M The prostate gland is an essential organ of themalereproductivesystemMale Genitalia Themale genitalia are the penis and the scrotum, a pouch of skin that holds the testes They grow to their ... What Is theReproductive System? CH A P T E R The Parts of theReproductiveSystem 15 CH A P T E R How theReproductiveSystem Works 35 CH A P T E R Problems with theReproductive ... surround the opening of the vagina They include a pair of skin folds nearest the vagina called the 24 The Pa r ts of the Repro ductive System Female genitalia, such as the labia, help to protect the...
... the organs of themalereproductivesystem including the locations, structures, and functions of each 32.2 Describe the causes, signs and symptoms, and treatment of various disorders of themale ... disorders of themalereproductivesystem 32.3 Summarize the organs of the female reproductivesystem including the locations, structures, and functions of each 32.4 Describe the causes, signs and ... the most common sexually transmitted infections 32-4 Introduction • Male and female reproductive systems – Function together to produce offspring – Produce important hormones 32-5 TheMale Reproductive...
... of theMale and Female Reproductive Systems Not all tissues in thereproductive tract are bipotential The internal reproductive structures (for example the uterus, uterine tubes, and part of the ... malereproductive structures female reproductive structures no reproductive structures malereproductive structures 50 percent of the time and female reproductive structures 50 percent of the ... and the different genitalia of male and female fetuses develop from the same tissues in the embryo View this animation that compares the development of structures of the female and male reproductive...