Histology of testis pdf merge

Quantitative histology of germ cells in the undescended testes of human fetuses, neonates and infants. Per protocol, testicular biopsies were never a primary procedure so as to minimize the risk of anesthesia exposure. Kangaroo testis section taken from a deeper zone middle showing. As an important part of the functional histology of the testis, sertoli cell structure and function. Morphological, glycohistochemical, and immunohistochemical. Male anatomy 10 medical university of south carolina. Septa which emanate from this capsule to subdivide the testis into about 250 incomplete lobules. The dual function of the testis is to produce spermatozoa and hormones. Histology of testis by dr mohammad manzoor mashwani. Histology of salmon testes 209 ehrlich y acid hematoxylin counterstained with eosin, and also mallory s triple stain proved valuable. Contains the rete testis, a network of ducts that connect with the seminiferous tubules 5. Gametogenesis involves two rounds of meiotic cell division, in which one diploid cell gives rise to 4 haploid cells this diagram shows the processes involved in spermatogenesis. Histology biol 4000 male reproductive system lecture. Each lobule is independent of the other and connects to the proximal vas deferens through the ducts.

The male reproductive system includes the testis, genital ducts, accessory sex glands and penis. Qualitative and quantitative parameters of spermatogenic activity are presented in practical terms. There is no doubt that undescended testes not operated on early in life are seriously damaged. Appendix of the testis is a benign structure of the testis that is a remnant of the muellerian duct. Describe the blood testis barrier and the cell that forms. At testicular hilum complex tubular architecture may resemble teratoma connects testicular tubules to 12 15 ciliated efferent ducts, which merge into a single duct, the epididymis at its head.

The ductili efferentes merge to form the epididymis which is the site where spermatozoa gain motility. Jan 01, 2018 a brief overview of the histological features of the testis useful for all healthcare students. Recent studies have indicated that additional factors may also be required for full differentiation. Learn reproductive system histology with free interactive flashcards. The effect of cannabis sativa hydroalcoholic extract on sperm parameters and testis histology in rats. Initial stage is transabdominal migration second stage is passage through the inguinal canal. As discussed previously, spermatozoa are produced in the seminiferous tubules in the testis. May 04, 2010 histology of the male reproductive system. Aug 19, 2014 the anatomy, histology and development of the testis, epididymis and ductus deferens. Mar 23, 2016 histology of vermiform appendixts identification points villi are absent. A brief overview of the histological features of the testis useful for all healthcare students. The most recent who histologic classification of testis tumors 2 is similar to the 1998 clas. The anatomy, histology and development of the testis. Pdf merge combinejoin pdf files online for free soda pdf.

Fauziah othman dept of human anatomy contents histology of testes histology of vas deferens histology of seminal vesicle histology of prostate gland histology of the bulbourethral gland histology of testes tunica albuginea dense white fibrous capsule composed of dense irregular connective tissue, forming septa that divide each. The testes not shown in the figure above lie within the scrotal sac. Microanatomical studies on the testis of domestic pig sus scrofa domestica reddy dhyana v1, rajendranath n2, pramod kumar d3 and raghavender kbp4 1mvsc scholar, 3professor and university head, department of veterinary anatomy, college of veterinary science, rajendranagar, hyderabad 2associate professor, department of veterinary anatomy, college of veterinary science. This video was recorded in alexandria faculty of medicine for medical educational purposes. A sertoli cell is a nurse cell of the testicles that is part of a seminiferous tubule and helps in the. This site describes the histology of the testes including cells in the seminiferous tubules and leydig cells and ducts. Annotate a light micrograph of testis tissue to show the location and function of interstitial cells leydig cells, germinal epithelium cells, developing spermatozoa and sertoli cells. The effect of cannabis sativa hydroalcoholic extract on. Describe the histology of and identify, in order, the passageways through which sperm pass as they exit from the body.

Calcium accumulation in the pineal gland makes this structure a useful landmark in xrays. Sertoli cells are joined to one another by junctional complexes that form the blood testis barrier. According to rene decartes, it is through the pineal that the soul controls the body. Pdf histological description of the testis, epididymis and. Jul 09, 20 histology of testis by dr mohammad manzoor mashwani 1. Pdf histologi dan histomorfometri testis dan epididimis. The production of sperm and eggsova gametes is a procedure called gametogenesis spermatogenesis and oogenesis. Testis the primary function of the male reproductive system is reproduction, which includes the production of spermatozoa, the transportation of spermatozoa from the testes out of the male body, the secretion by glands, and the. The world health organization 2016 classification of. Testis labels histology slide this histology slide shows the seminiferous tubules and interstitial tissue containing the interstital cells of leydig. It is lined by ciliated cuboidal epithelial cells that also contain microvilli.

Go back to histology part 2 index and choose male reproductive system under multimedia lessons, reproductive system. Testis is composed of convoluted seminiferous tubules in a stroma with leydig cells three layers. The head of the epididymis is where the efferent ductules merge. Stage i immature, stage ll maturing, stage ill mature and stage iv spent refer chapter on maturation and spawning for details. Testicular histology testis is made up of 2 major compartments 1 region inside seminiferous tubules spermatozoa development 2 interstitial space outside st leydig cells, androgen production. The male reproductive system consists of the testes, conducting tubules and ducts epididymis, vas deferens, ejaculatory ducts, accessory sex glands seminal vesicles, prostate, and bulbourethral glands, and the penis. Histological description of the testis, epididymis and ductus deferens of the northern great grey kangaroo macropus giganteus giganteus article pdf available january 2014 with 1,828 reads. Each testis is suspended in a outpouching of the peritoneal cavity. Each lobule contains one to four seminiferous tubules embedded in a connective tissue stroma. This barrier separates the germinal epithelium into a basal compartment and an adluminal compartment. The germinal seminiferous epithelium of the seminiferous tubules contains.

A subjectively determined abnormally soft testis consistency was found in 38 46% right testes and in 36 44% left testes. Spermatogonia reside in the basal compartment but subsequent stages of sperm development reside in the adluminal compartment. Well go over the different structures within each testis and how they function. The male gonad is the testis pl, testes the initial difference in male and female gonad development are dependent on testis determining factor tdf the protein product of the y chromosome sry gene. The study was laid out in randomized control trail rct. Histology of testis by dr mohammad manzoor mashwani 1. This website is intended for pathologists and laboratory personnel, who understand that medical information is imperfect and must be interpreted using reasonable medical judgment. Morphology and histology of the male reproductive system in. The male reproductive system consists of paired testes and genital ducts, accessory sex glands and the penis. Each testis is surrounded by a thick capsule of collagenous connective tissue called the tunica albuginia. Histological section through testicular parenchyma of a boar.

Figure 1 testis, rete testis dilation in a male b6c3f1 mouse from a chronic study. Akodon montensis, capybara, collared peccary and human. Morphology and histology of the male reproductive system. Identify the sertoli and leydig cells and understand their functions. Male anatomyreproductive system flashcards quizlet. As an important part of the functional histology of the testis, sertoli cell structure and function will be discussed in this chapter.

The general layout of the male reproductive system is as shown above. Histology of the reproductive tract testis the testis is multilobed or with many follicles separated by seminiferous duct fig. Here we show a role for the gadd45g protein in this primary sex differentiation. Recognize sertoli cells and leydig cells, and explain their roles in the production of sperm and regulation of the male reproductive system. An open testicular biopsy was performed while patients were under anesthesia for another treatmentrelated operation, such as central line placement or bone marrow biopsy.

Recognize the various parts of the male reproductive tract in histological section, and explain the contribution of each part. Histology of testicular biopsies obtained for an experimental. Pdf histological description of the testis, epididymis. This is an article covering the anatomy of testicles including definition, diagram and functions. These organs work to together to produce male gametes sperm and the other components of semen. Can you also identify the seminiferous tubules, which open into a network of anastomosing channels called the rete rete net testis at the mediastinum testes. Below are the 28 histology slides identification points of 1st year mbbs. Merge pdf files combine pdfs in the order you want with the easiest pdf merger available. Histology of the male reproductive system learning objectives. Soda pdf merge tool allows you to combine two or more documents into a single pdf file for free. Blood testis barrier 2 the two compartments are separated by a blood testis barrier consists of a series of gap and tight junctions that serve as a physiological barrier separating the sertoli cells from the capillaries located in the interstitial space. Preparation of testicular samples for histology and. The germinal epithelium suddenly ends with begin of the rete testis, forming a kind of valve to prevent the backflow of spermatozoa. Welcome to a series of educational videos covering the regional anatomy of human body.

This paper presents a survey of the morphological findings in cryptorchid testes, especially of children. The clinical characteristics of 82 patients with sertoli. Describe the process of spermatogenesis and the cytology of the cells involved in that process. This repair likely employs the process of nonhomologous end joining involving xrcc1 and parp1.

The testes are two ovalshaped organs in the male reproductive system. The septa converge towards the midline of the posterior border, meeting along a thickening of the tunica albuginea called the mediastinum testis. Thickening of tunica albuginea, projecting into the testis from its posterior surface. Morphology and histology of testis the changes in the morphological appearance of the testis can be categorized into four stages of development. Images of the human testis please subscribe end testis he 19683. Aug 30, 2017 these are required both for blood testis barrier formation and for linking elongated spermatids within the sertoli cell cytoplasm until sperm release. A continuous system of basal lamina joining the testicular cords with rete strands is well. Choose from 500 different sets of reproductive system histology flashcards on quizlet. The normal rete testis comprises a series of ductular channels called tubuli recti that lie subjacent to the. Rearrange individual pages or entire files in the desired order. The average size after puberty measures to around 2 inches in length, 0. Mar 16, 2020 webpathology is a free educational resource with 10274 high quality pathology images of benign and malignant neoplasms and related entities. Early histological studies of the differentiating fetal rat testis indicated.

The average size after puberty measures to around 2 inches in l. A histological study of the testis in cases of pseudoa. Rete testis the rete testis connects the seminiferous tubules to the ductus efferentes. Histology of rabbits testes as influenced by municipal. In conclusion, cadmium drastically affected the testis of rabbits and treatment with mepd alleviated some deleterious effects. Sixty male rabbits classified into three groups a, b and c and each group further subdivided into two subgroups viz. Testes develop retroperitoneally on the posterior abdominal wall and descend to scrotum before birth. It should be done only on patients with testicular histology which can be expected the efficacy of treatment.

Size of testis in healthy european males, the average volume of each testicle is 18cm2. Congenital malformation of the male genitalia, prenatal risk. Pdf histological and histomorphometric changes in testis during. The scrotum is often asymmetric, with one testis extending further down than the other. It extends inferiorly as the body of the epididymis and at the inferior pole of the testis enlarges and forms the tail of the epididymis. The small immature testes were cut either in cross or longi tudinal section. Blood testis barrier formed from unique tight junctions, separates sperm from immune system hormones release inhibin, androgen binding proteins respond to fsh and testosterone support support and nourish spermatocytes, therefore, also known as supporting or sustentacular cells other characteristics do not replicate. Several accessory glands produce the fluid constituents of semen. Septa ct partitions extending from the mediastinum to the tunica albuginea. The true epididymis is a coiled tubular continuation of the head.

The twisted seminiferous tubules merge into straightly running tubules tubuli seminiferi. Outline the processes involved in spermatogenesis within the testis, including mitosis, cell growth, the two divisions of meiosis and cell. Male reproductive system introduction grading scheme should be used in documenting commonly occurring lesions in male reproductive tissues if treatmentrelated exacerbation of common background changes is suspected. Histology of the testis, epididymis and spermatogenesis.

The pair of testes produces spermatozoa and androgens. Large and small ghostlike necrotic cells with bright pink cytoplasm and indistinct nuclei are evident hematoxylineosin, original magni. Histology of the testis of a fluke from an untreated field case of chronic fasciolosis in a sheep. Request pdf functional anatomy and histology of the testis the human testis is a paired endocrine and exocrine organ producing sex steroid hormones and. Functional anatomy and histology of the testis springerlink. Male anatomy primary organ testes, genetically determined in mammals. A cross section in the wall of the testis of the kangaroo showing tunica albuginea ta, tortuous testicular artery branches a, leydig cells lc and seminiferous tubules st. The larger testes were cut as nearly as pos sible in the midregion. Male reproductive system university of oklahoma health. The testes are ovoid in form, consisting of five testes tubules which enter to the vas deferens fig. The gross and microscopic features of the normal adult, prepubertal, and aging testis are described. Combining anterograde tracing and immunohistochemistry to define neuronal synaptic circuits. One approach to visualize internal structures of the testis is histological sectioning of the material.

The seminiferous tubules start and end at the rete testis. Testis size was judged as small 20 ml volume in 63 76% right testes and in 61 74% left testes. Functional anatomy and histology of the testis request pdf. This cavity, like the rest of the peritoneum, is lined by a serosa consisting of mesothelial cells supported by a fibrous connective tissue. Emphasis is placed on these findings, which are important to the pathologist in interpretation of diagnostic biopsy specimens other than neoplasms. The main functions of the male reproductive system, are to produce spermatozoa, androgens sex hormones principally testosterone and to facilitate fertilisation, by introducing spermatozoa into the femal genital tract copulation. The activity of the cilia helps to move the spermatozoa along the tube, as they are immobile until they reach the epididymis. In this study, the male reproductive morphology and histology of g. Testis histology slide this histology slide is from the testis. Over half of germ cell tumors consist of more than one cell type, requiring appropriate sampling for the correct diagnosis and correlation with the serum tumor markers human chorionic gonadotropin hcg and.

Histology of the male reproductive system repro 5 prof. Identify the seminiferous tubules of the testis and distinguish the stages of spermatogenesis. Histologi dan histomorfometri testis dan epididimis muncak muntiacus muntjak muntjak pada periode ranggah keras histology and histomorphometry of the testis and epididymis of muntjac muntiacus muntjak muntjak during hard antler period. Health sciences eventsseries in the ime video library. Select multiple pdf files and merge them in seconds. Testicular torsion is a twisting of the spermatic cord and its contents and is a surgical emergency affecting 3. After their descent, the testes remain connected with the abdomen by spermatic cords, and attached to the scrotum by the testicular ligament. Gadd45g is essential for primary sex determination, male fertility and testis development in humans and most mammals, differentiation of the embryonic gonad into ovaries or testes is controlled by the ylinked gene sry. Pathology of germ cell tumors of the testis isabell a. Histology of testis testis is covered by tunica vaginalis tunica albuginea tunica vasculosa tunica albuginea is a thick white fibrous connective tissuecalled capsule of testis deep to the capsule, there is tunica vasculosa which is a highly vascularised connective tissue. Dilation of the rete testis figure 1 is a relatively common incidental finding in aging mice.