hormonal regulation of male reproductive function

... Photograph of the ovary of female chicken, indicating the location of the stigma on an ovum Ovulation is the term used for the release of the mature ovum from the ovary into the second part of the female ... not typically at the same time The female reproductive system is sensitive to light exposure, especially the number of hours of light in a day The release of the next ova typically occurs 30-75 ... chicks have tens of thousands of potential eggs (i.e., ova) which theoretically could be laid Most of these, however, never develop to the point of ovulation So the maximum number of eggs a hen...

Ngày tải lên: 13/02/2014, 16:20

... Histology of the male reproductive system 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 ... Ultrastructure of the ducts of the reproductive tract of males of Melipona bicolor Lepeletier (Hymenoptera, Apidae, Meliponini) Anatomy, Histology and Embryology 32: 276281 Dirks TF, Sternburg JG 1972 Male ... Proceedings of the 10th International Congress of Entomology 449457 Ferreira A, Abdalla FC, Kerr WE, CruzLandim C 2004 Comparative anatomy of the male reproductive internal organs of 51 species of bees...

Ngày tải lên: 14/03/2014, 16:20

... RESULTS Levels of GR in male reproductive system of the adult rat To identify the cells responsible for GSSG reduction, an attempt was made to determine the localization of GR in the male reproductive ... different turnover rates of the protein in these tissues Immunohistochemical localization of GR in male reproductive system of the adult rat We employed immunohistochemical analyses of GR in order to ... on Fig Immunohistochemical localization of GR in the male reproduction system of adult rats Sections of an adult male rat were treated with : 200 dilution of anti-GR Ig Photographs were taken with...

Ngày tải lên: 17/03/2014, 17:20

... Ovary: progesterone • Estrogen, inhibin • Testis: testosterone Regulation of Reproduction: General Pathways Male Reproductive System Male Reproductive Anatomy and Physiology • Testis • Epididymis ... loops Regulation of Spermatogenesis Maturation of Sperm in Epididymis • Sperms in the early portion of epididymis are nonmotile • After 18-24 h they develop capability of motility • Most of sperms ... release testosterone • Binding of testosterone to ABP enhances spermatogenesis • GH: promotes early division of spermatogonia HPG Axis Hormonal Regulation of Testicular Function • Feedback inhibition...

Ngày tải lên: 28/03/2014, 14:20

... regardless of the length of the epididymis The proper functioning of the epididymis depends on androgens Veterinary Histology 11 Male In bulls, boars, cats and other domestic species, the final stage of ... prostate is homologous to the periurethral Skene’s glands of the female Functions Veterinary Histology 13 Male Secretions make up 4-6% of the volume of the ejaculate in the ruminants; in the stallion ... important in the movement of the non-motile spermatozoa toward the rete testis Veterinary Histology Male Clonal Nature of the Developing Sperm Cells In the division of all male germ cells, from spermatogonia...

Ngày tải lên: 28/03/2014, 16:20

... heterogeneity of the lectin staining patterns in the reproductive tubules of the adult thoroughbred horse suggests that the Histochemical Detection of Glycoconjugates in the Male Reproductive System of ... Detection of Glycoconjugates in the Male Reproductive System of the Horse 23 F ig Immunohistochemical detection of DBA (A), SBA (B), isolectin B4 (C), PNA (D), WGA (E), and UEA-I (F) in the testis of ... Glycoconjugates in the Male Reproductive System of the Horse 25 Fig Immunohistochemical detection of DBA (A), SBA (B), isolectin B4 (C), PNA (D), WGA (E), and UEA-I (F) in the corpus epididymis of the thoroughbred...

Ngày tải lên: 07/08/2014, 17:22

... mass index (kg/m2) 3American Society of Anesthesiologists class [as prognostic measure of perioperative morbidity] 4patient-controlled analgesia 5length of stay of IINB (7.8 mg in Group I vs 8.4 ... morphine offer advantages over morphine alone? Meta-analyses of randomized trials Anesthesiology 2005, 103:1296-304 White PF: The changing role of non-opioid analgesic techniques in the management of ... placebo-controlled trial of ilioinguinal-iliohypogastric nerve block (IINB) Patient allocation schematic for randomized, placebo-controlled trial of ilioinguinal-iliohypogastric nerve block (IINB) Page of (page...

Ngày tải lên: 11/08/2014, 07:21

... on the Female Primate Reproductive Function Dr Carol Smith Uniformed Services University of the Health Sciences Effects of Marijuana on Neuroendocrine Function in Human Males and Females Dr Jack ... secretion of reproductive pituitary hormones (LH, prolactin) and of ACTH through effects in the brain Dr Smith reviewed the acute and chronic effects of THC on the reproductive function of the female ... focused on the effect of chronic exposure of laboratory animals to cannabinoids, with emphasis on the male reproductive system The reports in the literature of reduction in reproductive organ weights...

Ngày tải lên: 22/03/2014, 12:20

... binomialrandomvariable,such that E(NR,,)= Ntpt whereNt is the total numberof females of age t andPt is the probabilitythat a female of age t is reproductively 112 * REPRODUCTIVE MATURATION AND SENESCENCE Schwartz et ... successful reproductionof offspring required extended parental care The adaptivemenopause hypothesis assumes that females actively enhancethe fitnessof post -reproductive their prior offspring and their ... absence of a large amount of human-causedmortality If this theory is correct, our model of reproductive senescence may approximate natural survival in adult female brown bears in the absence of human-causedmortality...

Ngày tải lên: 05/03/2014, 17:20

... health of her unborn children This document answers the following questions: K K K K K K K What are reproductive hazards for female workers? How does the female reproductive system work? What reproductive ... What are Reproductive Hazards for Female Workers? Substances or agents that affect the reproductive health of women or men or the ability of couples to have healthy children are called reproductive ... of minimizing the use of X-rays on pregnant women, the use of newer equipment that reduces the risk of exposure, and the use of protective shields have all helped to decrease the likelihood of...

Ngày tải lên: 14/03/2014, 16:20

... maturity (Roff, 1981; Morgan and Hoening, 1997) The objective of this contribution is to describe and identify the most common female reproductive strategies of commercially important species of the ... estimation of the number of oocytes spawned per batch, the percentage of females spawning per day (spawning fraction), and the duration of the spawning season (Hunter et al., 1985) This type of fecundity ... as the number of eggs produced by a female, there exist a variety of terms describing the different facets of fecundity: Potential annual fecundity is defined as the total number of advanced yolked...

Ngày tải lên: 22/03/2014, 12:20

... in prophase of meiosis I, changing the assortment of the genes In meiosis II, the chromatids of each chromosome separate in a process reminiscent of mitosis The potential number of gametes is ... the release of FSH 2) FSH causes follicle development and secretion of estrogen 3) Low levels of estrogen suppress FSH release thru – f.b 4) High levels of estrogen stimulate release of LH in a ... they are not cut off as they should be when developing oocytes are discovered) The second effect of estrogen is to stimulate the buildup of the functional endometrium, the lining of the uterus which...

Ngày tải lên: 28/03/2014, 14:20

... progesterone maintains functionalis  Basilar zone – permanent layer, deep to functionalis Functions of Uterus  Protection of embryo/fetus  Nutritional support  Waste removal  Ejection of fetus at birth ... 24.11 Histology of Endometrium  Functional zone – deciduum, sheds during menses – menstruation - flow sheds functionalis layer of endometrium – proliferative phase - under influence of estrogen ... lactiferous sinuses Site of most breast cancers Milk stored in lactiferous sinus until released at tip of nipple, influenced by oxytocin Lymphatic Drainage of Mammary Glands is of considerable clinical...

Ngày tải lên: 03/07/2014, 05:20

... conclusion, the oral application of TBT chloride to pubertal male rats during 35 to 44 days of age produces various reproductive disorders These adverse effects of TBT chloride on reproductive system in ... and maintains normal function of sex organs Anastrozole treatment decreased the production of 17β-estradiol, and then disturbed normal organ functions [1, 3] Thus, decreases of prostate and seminal ... were induced by treatments of TBT chloride, or combination of TBT chloride and flutamide (Fig and 4) Increments of detached debris and some sloughed cells in the tubules of epididymis were observed...

Ngày tải lên: 07/08/2014, 17:22

... weights of offspring [21] Dietary exposure of genistein to pregnant and lactating dams starting on gestation day also affected function and histology of reproductive organs in both female and male ... intake of genistein has no observable detrimental effects on male reproductive system The present study extend our knowledge of the effects of genistein exposure at adult stage on male reproductive ... non-detectable levels of estrogenic isoflavones throughout the experiment [30] Our study clearly showed that exposure to genistein at adult stage of mice did not affect male reproductive functions including...

Ngày tải lên: 07/08/2014, 18:20

... has the reproductive organs of a male or female Special portions of DNA, called sex chromosomes, are in charge of how a developing fetus’s reproductive organs form Each person has a pair of sex ... important in gender Males make more of one kind of sex steroid (testosterone), and females make more of another (estrogen) So while the basic body plan of male or female is set by genetics, hormones ... needed hormones 13 The Parts of the Reproductive System A special team of cells, organs, and chemicals carries out the tasks of the reproductive system Some of the reproductive system’s parts...

Ngày tải lên: 11/01/2015, 16:11

... THYROID HORMONES 30 • THYROID DYSFUNCTION 32 • SYMPTOMS OF THYROID DYSFUNCTION 34 • TREATMENT OF THYROID DISEASE 36 • FUNCTION OF PARATHYROID GLANDS 38 • REGULATION OF CALCIUM 40 • OSTEOMALACIA AND ... dysfunction always results in hormone deficiency Pituitary adenoma causes hypofunction of the pituitary gland Primary endocrine dysfunction can occur at the level of the thyroid An inability of ... THYROID DYSFUNCTION The causes of hypofunction of the thyroid (hypothyroidism) are as follows (11): • Primary, e.g Hashimoto’s thyroiditis (chronic immune disease) – insufficient synthesis of thyroid...

Ngày tải lên: 19/03/2016, 23:17

... dose of drug delivered depends on the surface area of the patch and the length of time that the patch is worn, which allows for tailoring the duration of medication effect with reductions of first-pass ... satisfied with the efficacy of the study medication on their child's attention The majority of caregivers (93.1%) indicated a high level of satisfaction with the duration of effect of the study medication ... dose of oral ERMPH, the AIM-C child HRQL mean (SD) score was 62.4 (20.5) At end of study, the child HRQL mean (SD) score increased to 73.4 (18.4), reflective of a 17.5% increase after weeks of...

Ngày tải lên: 25/10/2012, 10:06

... promote the role of leader as well as define the effect of human resource in applying these standard In term of practical aspect, it studies real situation of maintaining the efficiency of the quality ... 2008 The profit of the company also increased Profit in 2008 increased 11.3 % compared with 2007 while profit in 2009 just increased 7.8% compared with 2008 Although the annual revenue of Viet A ... the awareness of officials and workers about the effects of the implemented processes of the quality management system in organization In detail, opening short-time classes to teach officials and...

Ngày tải lên: 18/04/2013, 17:09