The male reproductive system includes the testis, genital ducts, accessory sex glands and penis. Septa ct partitions extending from the mediastinum to the tunica albuginea. The testes are two ovalshaped organs in the male reproductive system. Sixty male rabbits classified into three groups a, b and c and each group further subdivided into two subgroups viz. Male reproductive system yale school of medicine histology.
Quantitative histology of germ cells in the undescended testes of human fetuses, neonates and infants. Histology biol 4000 male reproductive system lecture. The seminiferous tubules start and end at the rete testis. 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. Testicular torsion is a twisting of the spermatic cord and its contents and is a surgical emergency affecting 3. Jul 09, 20 histology of testis by dr mohammad manzoor mashwani 1. Appendix of the testis is a benign structure of the testis that is a remnant of the muellerian duct. A continuous system of basal lamina joining the testicular cords with rete strands is well. In conclusion, cadmium drastically affected the testis of rabbits and treatment with mepd alleviated some deleterious effects.
The ductili efferentes merge to form the epididymis which is the site where spermatozoa gain motility. Functional anatomy and histology of the testis request pdf. The average size after puberty measures to around 2 inches in l. 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. One approach to visualize internal structures of the testis is histological sectioning of the material. Stage i immature, stage ll maturing, stage ill mature and stage iv spent refer chapter on maturation and spawning for details. Learn reproductive system histology with free interactive flashcards.
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. Histology of the male reproductive system learning objectives. 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. 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. Male anatomy primary organ testes, genetically determined in mammals. Describe the blood testis barrier and the cell that forms.
Calcium accumulation in the pineal gland makes this structure a useful landmark in xrays. The male reproductive system consists of paired testes and genital ducts, accessory sex glands and the penis. Select multiple pdf files and merge them in seconds. Pdf histologi dan histomorfometri testis dan epididimis. An increasing incidence of testis tumors has been noted over the second half of the 20th century. Morphological, glycohistochemical, and immunohistochemical. Recognize sertoli cells and leydig cells, and explain their roles in the production of sperm and regulation of the male reproductive system. Describe the process of spermatogenesis and the cytology of the cells involved in that process. Male anatomyreproductive system flashcards quizlet. The anatomy, histology and development of the testis. Each testis is suspended in a outpouching of the peritoneal cavity.
Recognize the various parts of the male reproductive tract in histological section, and explain the contribution of each part. 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. 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. This site describes the histology of the testes including cells in the seminiferous tubules and leydig cells and ducts. Testis histology slide this histology slide is from the testis. Pdf histological description of the testis, epididymis and. Each lobule is independent of the other and connects to the proximal vas deferens through the ducts. 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. An open testicular biopsy was performed while patients were under anesthesia for another treatmentrelated operation, such as central line placement or bone marrow biopsy. The activity of the cilia helps to move the spermatozoa along the tube, as they are immobile until they reach the epididymis.
Go back to histology part 2 index and choose male reproductive system under multimedia lessons, reproductive system. Pdf histological and histomorphometric changes in testis during. This low power photograph of the testis shows its basic organisation. 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. As an important part of the functional histology of the testis, sertoli cell structure and function will be discussed in this chapter. This video was recorded in alexandria faculty of medicine for medical educational purposes. Pdf merge combinejoin pdf files online for free soda pdf. The production of sperm and eggsova gametes is a procedure called gametogenesis spermatogenesis and oogenesis. Identify the sertoli and leydig cells and understand their functions.
A subjectively determined abnormally soft testis consistency was found in 38 46% right testes and in 36 44% left testes. Histology of testis by dr mohammad manzoor mashwani. This cavity, like the rest of the peritoneum, is lined by a serosa consisting of mesothelial cells supported by a fibrous connective tissue. 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. The germinal epithelium suddenly ends with begin of the rete testis, forming a kind of valve to prevent the backflow of spermatozoa. Histology of salmon testes 209 ehrlich y acid hematoxylin counterstained with eosin, and also mallory s triple stain proved valuable.
Pathology of germ cell tumors of the testis isabell a. 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 germinal seminiferous epithelium of the seminiferous tubules contains. Well go over the different structures within each testis and how they function. It should be done only on patients with testicular histology which can be expected the efficacy of treatment. This is an article covering the anatomy of testicles including definition, diagram and functions. Several accessory glands produce the fluid constituents of semen. Outline the processes involved in spermatogenesis within the testis, including mitosis, cell growth, the two divisions of meiosis and cell. These organs work to together to produce male gametes sperm and the other components of semen. 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. Semen traits, testicular morphometry and histopathology of cadmium. Dilation of the rete testis figure 1 is a relatively common incidental finding in aging mice. After their descent, the testes remain connected with the abdomen by spermatic cords, and attached to the scrotum by the testicular ligament.
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. This repair likely employs the process of nonhomologous end joining involving xrcc1 and parp1. Testis is composed of convoluted seminiferous tubules in a stroma with leydig cells three layers. 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. Merge pdf files combine pdfs in the order you want with the easiest pdf merger available. Each testis is surrounded by a thick capsule of collagenous connective tissue called the tunica albuginia. In this study, the male reproductive morphology and histology of g. Below are the 28 histology slides identification points of 1st year mbbs. The effect of cannabis sativa hydroalcoholic extract on sperm parameters and testis histology in rats. According to rene decartes, it is through the pineal that the soul controls the body. Health sciences eventsseries in the ime video library.
The small immature testes were cut either in cross or longi tudinal section. 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. Sertoli cells are joined to one another by junctional complexes that form the blood testis barrier. Congenital malformation of the male genitalia, prenatal risk. Morphology and histology of the male reproductive system in. Testis labels histology slide this histology slide shows the seminiferous tubules and interstitial tissue containing the interstital cells of leydig. Can you identify the thick collagenous capsule on the outside called the tunica albuginea. Rete testis the rete testis connects the seminiferous tubules to the ductus efferentes. A sertoli cell is a nurse cell of the testicles that is part of a seminiferous tubule and helps in the. Histology of testicular biopsies obtained for an experimental.
Embryology of the testis medical university of south. Functional anatomy and histology of the testis springerlink. Spermatogonia reside in the basal compartment but subsequent stages of sperm development reside in the adluminal compartment. Morphology and histology of the male reproductive system.
Cryptorchid testes of adults are much smaller than normal. Figure 1 testis, rete testis dilation in a male b6c3f1 mouse from a chronic study. Jan 01, 2018 a brief overview of the histological features of the testis useful for all healthcare students. Here we show a role for the gadd45g protein in this primary sex differentiation. The larger testes were cut as nearly as pos sible in the midregion. This barrier separates the germinal epithelium into a basal compartment and an adluminal compartment. The gross and microscopic features of the normal adult, prepubertal, and aging testis are described. Describe the histology of and identify, in order, the passageways through which sperm pass as they exit from the body. 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 clinical characteristics of 82 patients with sertoli. The testes are ovoid in form, consisting of five testes tubules which enter to the vas deferens fig. The average size after puberty measures to around 2 inches in length, 0.
Testes develop retroperitoneally on the posterior abdominal wall and descend to scrotum before birth. Qualitative and quantitative parameters of spermatogenic activity are presented in practical terms. Morphology and histology of testis the changes in the morphological appearance of the testis can be categorized into four stages of development. Male reproductive system university of oklahoma health.
Each lobule contains one to four seminiferous tubules embedded in a connective tissue stroma. Per protocol, testicular biopsies were never a primary procedure so as to minimize the risk of anesthesia exposure. Mar 23, 2016 histology of vermiform appendixts identification points villi are absent. Histological evaluation of the human testisapproaches to. Histology of the testis, epididymis and spermatogenesis. The twisted seminiferous tubules merge into straightly running tubules tubuli seminiferi. Images of the human testis please subscribe end testis he 19683. Preparation of testicular samples for histology and. Long ducts store the sperm and transport them to the penis.
Testis size was judged as small 20 ml volume in 63 76% right testes and in 61 74% left testes. A brief overview of the histological features of the testis useful for all healthcare students. Welcome to a series of educational videos covering the regional anatomy of human body. The normal rete testis comprises a series of ductular channels called tubuli recti that lie subjacent to the.
Thickening of tunica albuginea, projecting into the testis from its posterior surface. The testes not shown in the figure above lie within the scrotal sac. Soda pdf merge tool allows you to combine two or more documents into a single pdf file for free. Male anatomy 10 medical university of south carolina. The general layout of the male reproductive system is as shown above. The pair of testes produces spermatozoa and androgens. The study was laid out in randomized control trail rct. Mar 16, 2020 webpathology is a free educational resource with 10274 high quality pathology images of benign and malignant neoplasms and related entities. Histology of testis by dr mohammad manzoor mashwani 1. This paper presents a survey of the morphological findings in cryptorchid testes, especially of children. Emphasis is placed on these findings, which are important to the pathologist in interpretation of diagnostic biopsy specimens other than neoplasms. Histology of rabbits testes as influenced by municipal. Histology of the male reproductive system repro 5 prof.
Septa which emanate from this capsule to subdivide the testis into about 250 incomplete lobules. Histology of the reproductive tract testis the testis is multilobed or with many follicles separated by seminiferous duct fig. Request pdf functional anatomy and histology of the testis the human testis is a paired endocrine and exocrine organ producing sex steroid hormones and. The world health organization 2016 classification of. Rearrange individual pages or entire files in the desired order. Size of testis in healthy european males, the average volume of each testicle is 18cm2. The true epididymis is a coiled tubular continuation of the head. Pdf this study aimed to characterize the gonadal postnatal development in rabbits from white population found in algeria. Aug 19, 2014 the anatomy, histology and development of the testis, epididymis and ductus deferens. The scrotum is often asymmetric, with one testis extending further down than the other. Histology of the testis of a fluke from an untreated field case of chronic fasciolosis in a sheep. Early histological studies of the differentiating fetal rat testis indicated. 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. 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.
Kangaroo testis section taken from a deeper zone middle showing. The septa converge towards the midline of the posterior border, meeting along a thickening of the tunica albuginea called the mediastinum testis. Identify the seminiferous tubules of the testis and distinguish the stages of spermatogenesis. A histological study of the testis in cases of pseudoa. Initial stage is transabdominal migration second stage is passage through the inguinal canal. As an important part of the functional histology of the testis, sertoli cell structure and function.
Contains the rete testis, a network of ducts that connect with the seminiferous tubules 5. Choose from 500 different sets of reproductive system histology flashcards on quizlet. This website is intended for pathologists and laboratory personnel, who understand that medical information is imperfect and must be interpreted using reasonable medical judgment. Recent studies have indicated that additional factors may also be required for full differentiation. 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 most recent who histologic classification of testis tumors 2 is similar to the 1998 clas. Pdf histological description of the testis, epididymis. Spermatozoa flow from the seminiferous tubules into the rete testis and then the ductili efferentes. Akodon montensis, capybara, collared peccary and human. As discussed previously, spermatozoa are produced in the seminiferous tubules in the testis. There is no doubt that undescended testes not operated on early in life are seriously damaged. The head of the epididymis is where the efferent ductules merge. 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. The effect of cannabis sativa hydroalcoholic extract on.
Large and small ghostlike necrotic cells with bright pink cytoplasm and indistinct nuclei are evident hematoxylineosin, original magni. May 04, 2010 histology of the male reproductive system. It is lined by ciliated cuboidal epithelial cells that also contain microvilli. 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. Combining anterograde tracing and immunohistochemistry to define neuronal synaptic circuits. Histological section through testicular parenchyma of a boar. The dual function of the testis is to produce spermatozoa and hormones.