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. Lutz slomianka blue histologymale reproductive system,06082009. All mbbs books pdf free download first year to final year. Morphological studies on epididymis and vas deferens of one. 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. When the sperm are ejaculated, they move through the tail of the epididymis. It was found that the epididymis of th dog has 3 distinct segments. The epididymis is a single tubule that connects the efferent ductules to the vas deferens and plays important roles in sperm transit, maturation, and storage. Apr 29, 2019 the histology of longitudinal sections of the proximal epididymis was described, and immunohistochemistry using specific antibodies was used to characterize cell types of the efferent duct and caput epididymis epithelia.
Results the pampas cat male reproductive system is formed by the testes, epididymis, vas deferens, accessory glands, penis and foreskin. It is present in all male reptiles, birds, and mammals. And, finally, they were sent to photo documentation, microscopic analysis in leica dm750 and description of structures. Oct 05, 2015 this study was aimed at comparing morphology of the epididymis and vas deferens of one humped camel bull ocb, uda ram ur and red sokoto buck rsb. Morphology and histology of the male reproductive system in.
Helping the student recognize the microscopic structural features of the cells, tissues, and organs of the body. Lesions detected in the epididymis may be suspected as being indirect i. Passage through the epididymis contributes to sperm maturation. Histological and anatomical study of the white rooster of. Epididymis simple english wikipedia, the free encyclopedia. Reproductive histology of epididymis view related images. The structure identifiable grossly as the epididymis contains the efferent ductules, the highly convoluted epididymal tubule, and the surrounding connective tissue. Once the structure is selected you can go to the related images to. These slides except for the ucsf slide include both testis and epididymis you will study. One may see a blue dot sign through the skin or feel a hard nodule at the.
Recognize the various parts of the male reproductive tract in histological section, and explain the contribution of each part. Undescended testis has a prevalence of 3% of all term baby boys, but can be seen in 30%. The literary and artistic works on the original blue histology website may be. It is lined by a tall pseudostratified columnar epithelium.
This image is a histological section of the epididymis. It is a single, narrow, tightlycoiled tube in adult humans, 6 to 7 meters 20 to 23 ft in length. Epididymis, epithelium vacuolation nonneoplastic lesion atlas. The more important are appendix testis at and appendix epididymis ae. Functional anatomy and histology of the testis springerlink. The tunica dartos is responsible for holding the testes. The epididymis was not divided into recognizable parts and was frontally attached to the corresponding testis on its dorsomedial aspect continuous with the ductus deferens. Revisiting structurefunctions of the human epididymis. His book was translated into english by alexander 1769. The epididymis is an essential component of the male reproductive tract. There are so many sperm that they cannot swim, but use peristalsis from muscles in the vas deferens.
Blue balls is slang for the condition of temporary fluid congestion vasocongestion in the. Apr 01, 2015 the epididymis is a long, coiled tube that stores sperm and transports it from the testes. According to lake 1 971, the pampiniform plexus, which is typical in mammalian species, does not exist. The epididymis is a single, highly convoluted duct approximately 70 m in length that has a grossly distinct head, body, and tail.
A textbook of histology, including microscopic technic. The initial segment of the epididymis, first described in the guinea pig epididymis, is a histologically distinct region of tall pseudostratified columnar epithelium that receives spermatozoa from the ductuli efferentes figure 1. An inflammation of the epididymis is called epididymitis. Testis and epididymis efferent duct and epididymis. It is much more common than testicular inflammation, termed orchitis.
The ductuli efferentis were moderately large with pseudostratified columnar epithelium lined with three cell types, including ciliated, nonciliated and basal cells. Jan 08, 2015 lesions detected in the epididymis may be suspected as being indirect i. Histological description of the rabbit epididymis the epididymis is a tubular body on top of the testicle at its outer edge fig 12, it is the place where spermatozoids acquire their fertilizing capacity. Epididymis evolution from reptiles to mammals wikipedia. The epithelium appears much more folded than illustrated in any of the textbooks i have consulted. These cells bear stereocilia on their luminal surface that absorb fluid released from the testes along with sperm. Infections typically afflicit the epididymis before the testis. The ductus epididymidis is lined by columnar epithelium with stereocilia and has a wall of smooth muscle cells. Infants, children, and adolescents with inguinoscrotal pathology comprise a. The epididymis was divided into eight segments permitting gene profiling by microarray and gene ontology analysis. Recognize sertoli cells and leydig cells, and explain their roles in the production of sperm and regulation of the male reproductive system. The objectives for examining microscopic slides as part of a course in basic histology include.
The epididymis is a long, coiled tube that stores sperm and transports it from the testes. Most links are to histological images that relate to tissue structure and development. The columnar epithelial cells lining the epididymis absorb testicular fluid, secrete a variety of factors for sperm cell maturation and maintenance, and remove. Departments of anatomy and 2morbid anatomy, postgraduate institute of medical education and. Media in category histology of human epididymis the following 17 files are in this category, out of 17 total. Epididymis duct basically a cross section of some balls. Fibrous pseudotumour of the paratesticular region uncommonly associated with the epididymis.
Unsw histology online virtual slide links requires moodle login. The epididymis provides the environment for final maturation of spermatozoa. Once the structure is selected you can go to the related images to see if there are more views of the selected structure. Appendix of the epididymis, also epididymal appendix, is a benign structure thought to be derived from the mesonephric duct or wolffian duct it should not be confused with appendix of the testis. In this study, the male reproductive morphology and histology of g. One of the following is not a characteristic of the endocrine system. Sperm cells produced in the testes are transported to the epididymes, where they mature and are stored. One of the things that will be expected of you is a good understanding when it comes to histology, and below is what is considered the toughest mcq test on the course.
This video was recorded in alexandria faculty of medicine for. The testes are oval to rounded paired organs, loca. The bulk of the gland is composed of the seminiferous tubules, in which sperm develop. No initial segments can be distinguished by macroscopic examination of the caput epididymis in normal men jonte and holstein, 1987. How to get rid of muscle knots in your neck, traps, shoulders, and back duration. April 5 embryology bgda practical male reproductive tract histology. Epididyme, either of a pair of elongated crescentshaped structures attached to each of the two male reproductive organs, the testes see testis.
Many images are sourced from the original unsw anatomy histology slide set and uwa blue histology online images. This image shows the pseudostratified columnar epithelium that lines the mucosa of the epididymis the epididymis, located in the scrotum, is a highly coiled portion of the duct which carries sperm from the testis to the urethra in the epididymal epithelium, the tall columnar cells and shorter basal cells give the appearance of two rows of nuclei. Medical school histology basics male reproductive system. The anatomy, histology and development of the testis, epididymis and ductus deferens.
The epididymal epithelium develops many different forms of vacuolation. The gubernaculum regresses and leaves behind remnants which can be found in the adult. Each epididymis is formed by a single convoluted tubule seen in multiple cross sections. The efferent ductules of the epididymis are lined by a columnar epithelium with cilia and microvilli. The epithelium absorbs the testicular fluid and provides further transport of spermatozoa. Tunica dartos smooth muscle layer found below the skin of the scrotum. The tubules are convoluted and have the form of loops at whose ends the lumen narrows and continues in short segments, known as straight tubules, or tubulirecti. Pdf this chapter focuses on the embryonic origins of the different regions of the epididymis. Each epididymis has three regions, called, respectively, the head, body, and tail.
Skin contains many sweat glands, thermosensitive receptors and sympathetic nerves. Smooth muscle tone controlled by androgens released in response to temperature changes detected by sensory nerves within the scrotal skin. It appears as a curved structure on the posterior back margin of each testis. This means that several sections of it can be found on a single slide. Bcgassociated epididymoorchitis complicating the treatment of bladder cancer. Bgda practical male reproductive tract histology embryology. This study was carried out to investigate the histological and anatomical description of the male genital tract in iranian native white roosters iwr. The ductulis efferentes and the ductus epididymus make up the epididymis.
The biochemistry of semen, 2 refers to the epididymis as the. In different patients, the size and shape of the epididymis are different. Jun 14, 2016 the histology of the caput epididymis in humans suggests that the proximal portion of the caput epididymis is mainly formed by coiled vasa efferentia. These ducts are highly coiled, and make up a single tube in the epididymis that can be up to 6 metres long. Using your mouse, select a histological structure to learn more about it. The spermatogonal cell layer showed some variation between different birds in layers. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. The seminiferous tubules had a dense and compact organization.
In this video the author presents histology of epididymis. It is a site of sperm storage and maturation until the time of their discharge to the ductus deferens or vas deferens. Many illustrations in these vibs histology youtube videos were modified from the following books and. Histological description of the testis, epididymis and. In this article we aim to cover the embryology, anatomy, histology and functions of the epididymis. The aim of the present paper was the study of the epididymis of the dog, at the optimal microscope level. The vacuolation may be the result of a number of degenerative processes, including the accumulation of lipids, phospholipids phospholipidosis, glycoproteins, or fluids.
Histological and anatomical study of the white rooster. Epididymis histology slide this is a histology slide of the epididymis. No fat to maintain temperature lower than rest of body contains. Sections of epididymis may therefore not contain both types of. The epididymis is the primary sperm storage organ in male reptiles. In addition, the epididymis holds significant promise as the site of action for a male contraceptive. In this section, the spermatozoa can be seen in the lumen throughout the epididymis. Sections of epididymis may therefore not contain both types of ducts. Incidence and structure of the appendices of the testis. The epididymis is an organ of a long and irregular shape, which is located at the back of the testis and covered by the visceral tunica vaginalis. These tubules connect the seminiferous tubules to an anastomosing labyrinth of epitheliumlined channels, the rete testis.
Histology of the testis, epididymis and spermatogenesis. They offer portability and can be used anywhere on a handhandled mobile device, tablet or pc. Three sessile testicular appendices and 11 epididymal appendices were double. The epididymis is the most common source of acute and chronic scrotal pain in the outpatient setting, yet there are no standardized methods for proper palpation of this organ. Appendix testis and appendix epididymis springerlink. Sperm move from the seminiferous tubules within each testis, through the rete testis and the efferent ductules, to the epididymis, and hence to the vas deferens. Manual spermatic cord detorsion at the bedside is controversial, as it can. Histology lecture series larry johnson, professor veterinary integrative biosciences. This embryology category lists files and media related to histology.
Interpreting histopathology in the epididymis ncbi. This video was recorded in alexandria faculty of medicine for medical educational purposes. It is here that they aquire motility and fertility. After exiting the testicular duct system composed of the rete testis and ductus efferentes, spermatozoa enter the highly convoluted epididymis, visible on the dorsal aspect of the testis here. The head of the epididymis is a flattened structure that lies dorsomedially along the cranial border of the testis and is attached closely to the testis. An injury or infection of the epididymis causes epididymitis, a painful condition that can take months to heal. See more ideas about histology slides, anatomy and physiology and physiology.
An average of 12 layers of cells was seen in the seminiferous tubules epithelium. Testis anatomy and histology sertoli cells germ cells spermatogenesis hormone receptors. Epididymis histology slide this is a histology slide of the testis and epididymis. In the rabbit there are three continuous areas that correspond to the head, body and tail. Primary cause of epididymal obstruction usually related to cystitis, prostatitis or urethritis that spreads through vas deferens or lymphatics. Webscope imagescope recall that collagen fibers will stain bluegreen whereas smooth. The anatomy, histology and development of the testis. The pdf books are a great way when it comes to keeping in touch with your studies while away from your home or dorm. We searched for the presence of an at or ae in 103 consecutive inguinal hernia and 39 cryptorchidism operations performed at our department during the last 2 years and found 114 ats 80. Its histological features and its complete development is necessary for. Epididymis each epididymis is formed by a single convoluted tubule seen in multiple cross sections. Aug 19, 2014 the anatomy, histology and development of the testis, epididymis and ductus deferens. Testicular appendages represent remnants of embryonic structures.
Histology pages, school of anatomy and human biology, uwa, australia. Fifteen testes and vas deferens were collected, organs grossly examined, measured for weight or length and processed for histology. Indirect action on the epididymis can be confirmed by serum and testicular fluid testosterone assay and testicular histology. Blue histology epithelia and glands great for sassafras science anatomy. Histology department histology midterm examination a please note. Recognize the various parts of the male reproductive tract in histological section, and.
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