Functional anatomy and histology of the testis springerlink. In summary, the right testis is predominately larger than the left. Testis, in animals, the organ that produces sperm, the male reproductive cell, and androgens, the male hormones. Can you identify the thick collagenous capsule on the outside called the tunica albuginea. This low power photograph of the testis shows its basic organisation. The testis is both an exocrine producing spermatozoa and an endocrine producing androgens gland. Testosterone release is controlled by the anterior pituitary luteinizing hormone. Explain the importance of each portion of the duct system and accessory glands of the male reproductive tract.
Endocrinology of the testis and male reproduction pdf author manuela simoni isbn 3319444409 file size 22. In rodents the ovarian bursa communicates with the peritoneal cavity via a small slitlike opening. The anatomy, histology and development of the testis. The visceral internal layer covers the testis, the head of epididymis, and the inferior part of ductus. This book provides a comprehensive overview of endocrinology of the male reproductive system. 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.
Below are the 28 histology slides identification points of 1st year mbbs. They are contained within the scrotal sac, which is located directly behind the penis and in. Histology of testicular biopsies obtained for an experimental fertility preservation protocol in boys with cancer. This cavity, like the rest of the peritoneum, is lined by a serosa consisting of mesothelial cells supported by a fibrous connective tissue. This new edition of jaypees well established colour atlas and practical guide has been enriched by the addition of a large number of new photomicrographs of human tissues. Histology of testis by dr mohammad manzoor mashwani. Reproductive system answer sheet observations take a picture and insert it in the appropriate section below also record the total magnification needed to best view the object.
Testis is composed of convoluted seminiferous tubules in a stroma with leydig cells three layers. A text and atlas 7th edition pdf using our direct links mentioned at the end of this article. Histology of testis sections of high percentage chimaeric xl169 mice. It is lined by ciliated cuboidal epithelial cells that also contain microvilli. The germinal epithelium suddenly ends with begin of the rete testis, forming a kind of valve to prevent the backflow of spermatozoa. Dec 27, 20 a practical guide to the histology of the mouse provides a fullcolour atlas of mouse histology. Well go over the different structures within each testis and. Effects of kolaviron, the major constituent of garcinia. Testis sections of high percentage xl169 chimaeric animals were prepared from bouins fixed tissue, stained with haematoxylin and eosin, and analyzed by light microscopy.
The stages of the cycle of the seminiferous tubules are indicated in roman numerals. One approach to visualize internal structures of the testis is histological sectioning of the material. Male reproductive system introduction for normal histology of rete testis. The tunica vaginalis is the peritoneal sac that partially encloses the testes. Histology of the testis the seminiferous tubules have a diameter of about 200. Each testis is a compound tubular gland contained within the tunica albuginea, a thick connective tissue coat that contains. Describe the histological organization of the testis and the process of spermatogenesis in the germinal epithelium of the seminiferous tubule. Describe the histology of and identify, in order, the passageways through which sperm pass as they exit from the body. Figure 1 testis, rete testis dilation in a male b6c3f1 mouse from a chronic study.
The cutup of orchiectomy specimens is dealt with in orchiectomy grossing. Partial obstruction to the outflow of fluid from the testis is the most common cause of rete testis dilation, and this can be incidental or chemically induced. They are contained within the scrotal sac, which is located directly behind the penis and in front of the anus. 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. Rete testis the rete testis connects the seminiferous tubules to the ductus efferentes. The functions of the testes are to produce both sperm and androgens, primarily testosterone.
Reproductive system lab report assistant exercise 1. In humans the testes occur as a pair of ovalshaped organs. Textbook of human histology 6th edition pdf free download. Histology of testicular biopsies obtained for an experimental. If the testis is biopsied, it is usually for fertility. The male gonad is the testis pl, testes the initial difference in male and female gonad development are dependent on testisdetermining factor tdf the protein product of the y chromosome sry gene. Recent studies have indicated that additional factors may also be required for full differentiation. Male anatomy primary organ testes, genetically determined in mammals testis releases hormones that then control the development of secondary sex characteristics secondary organs internal duct system e. As a service to our subscribers we are providing this early version of the article.
Describe the cytology of the endocrine cells in the testis. The scrotum is often asymmetric, with one testis extending further down than the other. Histology of the male reproductive system repro 5 prof. The excretory duct system, which transports the sperm from the testes and whose accessory glands produce and modify the contents of semen.
The testis, plural testes, are important for survival of the species. Testicle or testis is the male reproductive gland or gonad in all animals, including humans. It is a muscular tube having the layers described above for the. Histology of gonads in tilapia zillii gervais fed neem azadirachta indica leaf meal diets 12 in this study, the damage done to tissues of the testes and ovaries was minimal at lower dietary nlm level 1. The male reproductive system consists of paired testes and genital ducts, accessory sex glands and the penis. No fat to maintain temperature lower than rest of body contains. Testes develop retroperitoneally on the posterior abdominal wall and descend to scrotum before birth. As an important part of the functional histology of the testis, sertoli cell structure and function will be. 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 tiss. The testis is connected to the scrotum by a fibrous connection known as the gubernaculums testis. 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 female reproductive system test 1, test 2.
Histology of testis by dr mohammad manzoor mashwani 1. Overall this is a clearly written and well illustrated guide to the histology of the mouse, but also goes a step further by providing information on selected techniques, background pathology, potential artefacts and additional procedures associated with the examination of this commonly used laboratory species. Testicle or testis plural testes is the male reproductive gland or gonad in all animals, including humans. A brief overview of the histological features of the testis useful for all healthcare students. Per protocol, testicular biopsies were never a primary procedure so as to minimize the risk of anesthesia exposure. Like the ovaries, the testes are a source of gametes and steroid sex hormones. Pdf this new edition of the bestselling english edition of junqueiras basic histology. After their descent, the testes remain connected with the abdomen by spermatic cords, and attached to the scrotum by the testicular ligament. Around the testis, the parietal peritoneum is named tunica vaginalis while the visceral peritoneum is named tunica albuginea. In this study, the male reproductive morphology and histology of g. Histology of testis sections of high percentage chimaer openi. Several accessory glands produce the fluid constituents of semen. Bridge between biochemistry, molecular biology, physiology, disease processes and the effects of diseases.
This process is the outpouching of the parietal peritoneum, which follows the testes during descent and then encloses them. As an important part of the functional histology of the testis, sertoli cell structure and function will be discussed in this chapter. Also seen are the epididymis and the ductus deferens lying posterior to the testis. Anatomy and function, diagram, conditions, and health. Once this lab report is complete, print out the document and place in your lab notebook for submission at the end of the semester.
Embryology of the reproductive system presented by dr. Internally, a testicle is much more complex than what meets the eye externally. Describe the process of spermatogenesis and the cytology of the cells involved in that process. Lara and others published testis physiologyoverview and histology find, read and cite all the research you need on researchgate. Gonad morphology, histology, and spermatogenesis south. Histology tests about the female reproductive system. Describe the bloodtestis barrier and the cell that forms it. Aug 19, 2014 the anatomy, histology and development of the testis, epididymis and ductus deferens. Keywords histology, hypothalamus, pituitary, testis 1.
Embryology of the testis parks and jameson endocrinology 1463. Size of testis in healthy european males, the average volume of each testicle is 18cm2. Testes tunica vaginalis when the testis is removed from the scrotum, the parietal layer of the tunica vaginalis remains attached to the scrotum. This book provides a comprehensive overview of endocrinology of the male reproductive system, explaining how it works and how.
The pair of testes produces spermatozoa and androgens. The activity of the cilia helps to move the spermatozoa along the tube, as they are immobile until they reach the epididymis. One or several highly convoluted seminiferous tubules form a lobule of the testis. The use of testicular samples allows a detailed analysis of the structure of both seminiferous tubules and the interstitial space. Testis histology slide this histology slide is from the testis. 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. The anatomy, histology and development of the testis, epididymis and ductus deferens. Textbook of human histology 6th edition pdf free books pdf epub. Morphology and histology of the male reproductive system. It is worth noting that key role in the control of germ cell development is assigned to sertoli cells. The average size after puberty measures to around 2 inches in length, 0. The normal rete testis comprises a series of ductular channels called tubuli recti that lie subjacent to the. A practical guide to the histology of the mouse wiley.
Histology tests about the male reproductive system. Dilation of the rete testis figure 1 is a relatively common incidental finding in aging mice. 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. Morphology and histology of the male reproductive system in. In an adult testis, sertoli cell nuclei are often inconspicuous among the much more numerous nuclei of germ cells in various stages of meiosis and maturation. As development and growth progress the gubernaculums testis pulls the testis through the inguinal rings into the scrotum through a double walled tube of peritoneum, the vaginal process, which preceded the descent of the testis. The study of the microscopic structure of biological material and the ways in which individual components are structurally and functionally related. Trichrome stain, line scale40 m, enlargement image line scale20 m. 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. Nevertheless, the nuclei of sertoli cell can be readily recognized as those typical of columnar epithelium oval, euchromatic, nuclei, usually with prominent nucleoli.
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. Each testis is suspended in a outpouching of the peritoneal cavity. Histology of the testis, epididymis and spermatogenesis. Pdf histological description of the testis, epididymis. Histology of the ovary and testis insert the images from the reproductive slide supplemental document, then add required labels by hand. Endocrinology of the testis and male reproduction pdf.
These are required both for bloodtestis barrier formation and for linking elongated spermatids within the sertoli cell cytoplasm until sperm release. The testes are two ovalshaped organs in the male reproductive system. Jp gunasegaran histology 2nd edition pdf free books pdf epub. Jul 09, 20 histology of testis by dr mohammad manzoor mashwani 1. Histology of testes the albacore testis has a lobulartype cellular ar. A text and atlas 7th edition pdf free download alright, now in this part of the article, you will be able to access the free pdf download of histology. Preparation of testicular samples for histology and. The finding may also be associated with dilation of the adjacent. Mouse models of disease are used extensively in biomedical research with many hundreds of new models being generated each year. This video was recorded in alexandria faculty of medicine for medical educational purposes. This immature testis, cut in cross section, provides an overview of the testis proper, its enclosing tunics, and its location in the scrotum. Long ducts store the sperm and transport them to the penis. Effects of kolaviron, the major constituent of garcinia kola.
Testis biopsy protocol 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 extract is one of the numerous plant products, and nutri tional supplements that have been found to have a wide range of medicinal value. Histology of testis sections of high percentage chimaer. May 29, 2018 the testes are two ovalshaped organs in the male reproductive system. Introduction kolaviron is the major constituent of garcinakola. Well go over the different structures within each testis and how they function. This is a pdf file of an unedited manuscript that has been accepted for publication. This website provides free ebooks to read or download in english for you. Embryology of the reproductive system creighton university.
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