The study population consisted of males younger than 18 years with a primary diagnosis of undescended testis. Some cases lost entirely the testicular structure, and the germinal epithelium was replaced totally by hyaline substances. Testosterone release is controlled by the anterior pituitary luteinizing hormone. Testis, commonly referred to as testicle, is a mobile organ lying within the scrotum. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Seminiferous tubules converge into rete testis at hilum, anastomose into efferent tubules. Provide a detailed histological description of the endometrium. Histology of the male reproductive system repro 5 prof. The testes also produce a hormone called testosterone. Histological and immunohistochemical examination of the. The septa converge towards the midline of the posterior border, meeting along a thickening of the tunica albuginea called the mediastinum testis. Histological and histopathological evaluation of the testis by lonnie dee russell, 1990, cache river press edition, in english 1st ed.
Get a printable copy pdf file of the complete article 288k, or click on a page image below to browse page by page. Also on the inferior pole is the scrotal ligament a remnant of the gubernaculum testis and serves to fix the testis to the bottom of the scrotum. 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 testis, epididymis and spermatogenesis. Functional anatomy and histology of the testis springerlink. Histological study of the effect of paracetamol on the. While the other types have been the effect of necrosis of spermatogoni cells on the testis. The genital ducts and accessory glands produce secretions that, aided by smooth muscle. On the posterior edge and superior pole of the testis is a structure called the epididymis.
Below are the 28 histology slides identification points of 1st year mbbs. Understand the importance of the structure of the testis for reproduction. Explain the importance of each portion of the duct system and accessory glands of the male reproductive tract. The study of histological structure of seminiferous tubules at different stages. Histology of the testis the seminiferous tubules have a diameter of about 200. The male reproductive system consists of paired testes and genital ducts, accessory sex glands and the penis. Also combined administration of antidiabetic drug with antioxidants can make synergistic effect on other organs as kidney, pancreases and this was reported by 6.
Testicle or testis is the male reproductive gland or gonad in all animals, including humans. The effect of metformin versus vitamin e on the testis of. No fat to maintain temperature lower than rest of body contains. Histological and histopathological evaluation of the testis. Accessory glands, along the excurrent ducts of this system, contribute secretions that affect the maturation, ultimate motility, and the capacity of sperm to fertilize an ovum. The average size after puberty measures to around 2 inches in length, 0. The various organs whose histological peculiarities has been discussed are. Inside lobules are located in the seminiferous tubules 2 to 4 tubes per lobule. Reproductive systems structure of male reproductive system testes structure.
Aptamers are becoming well admired for diagnostic and therapeutic applications. Histological structure of testes and ductus epididymis of. Human beings commonly have one testis hanging lower than the other. One or several highly convoluted seminiferous tubules form a lobule of the testis. There is no doubt that undescended testes not operated on early in life are seriously damaged. This low power photograph of the testis shows its basic organisation. Discuss the composition of the cervical mucosa and correlate the changes in the cervical.
List the different types of epithelial cells and briefly discuss the location, structure and function of each. Histology of testis by dr mohammad manzoor mashwani 1. 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. Catfish order siluriformes is a diverse and widespread fresh water group of ostariophysan fish wright, 2009. Outline the histological features of plasma membrane, and correlating them with their function. Recent studies have shown that aptamers might be effectively used for tumor characterization and as commercially available monoclonal antibodies. The velvet is needed in the ancient chinese medicinal composition and the meat for consumption. Oval structure about 5 centimeters in length and 3 centimeters in diameter. The dual function of the testis is to produce spermatozoa and hormones. Comparison of semen characteristics and histological structure of the testis from transgenic and nontransgenic rabbits riunet. The male reproductive system includes the testis, genital ducts, accessory sex glands and penis. This hormone is responsible for sex drive, fertility, and the development of muscle and bone mass. Microscopic anatomy of the testis in interactive image.
Morphological and histomorphological structure of testes. The functions of the testes are to produce both sperm and androgens, primarily testosterone. Histological and ultrastructural changes in mammalian. Histological and ultrastructural changes in mammalian testis under the effect of hydrocortisone waslat w. Comparison of semen characteristics and histological. Noaa rv town send cromwell and the new zea land rv kaharoa during coopera tive studies conducted in 1986 and 1987 to investigate the biologylecol. This paper presents a survey of the morphological findings in cryptorchid testes, especially of children. The primary functions of testis are to produce sperm and androgens.
The anatomy, histology and development of the testis. Morphology and histology of the male reproductive system. Terms in this set 20 describe the structure of a testis. In this article we will discuss about the histological peculiarities of various organs.
A brief overview of the histological features of the testis useful for all healthcare students. Discuss the three histological layers of the uterus. Materials and methods albacore specimens were collected onboard the us. The germinal epithelium suddenly ends with begin of the rete testis, forming a kind of valve to prevent the backflow of spermatozoa. Histological study on the kidney and testis tissues of rat.
Full text full text is available as a scanned copy of the original print version. Describe the histological organization of the testis and the process of spermatogenesis in the germinal epithelium of the seminiferous tubule. Catfish is the most diverse fish order and the second or third diverse order among vertebrates. Size of testis in healthy european males, the average volume of each testicle is 18cm2. Septa ct partitions extending from the mediastinum to the tunica albuginea. Well go over the different structures within each testis and how they function. Assessment of testis histological changes and sperm parameters in experimentallyinduced unilateral and bilateral cryptorchid mouse model forouzan absalan1 m. Dna aptamers for the characterization of histological. Histological findings in patients with cryptorchidism and. Contains the rete testis, a network of ducts that connect with the seminiferous tubules 5. Ovaryoviductsseminal receptacle and tubular accessory glands obtained by dissection of nonfed and fed, unmated and mated females are shown in figures 34 and 5.
Each lobule contains one to four seminiferous tubules embedded in a connective tissue stroma. Assessment of testis histological changes and sperm. Get a printable copy pdf file of the complete article 348k, or click on a page image below to browse page by page. Cryptorchid testes of adults are much smaller than normal. The writers efforts were directed towards securing detailed knowledge of the histological structure of the testis and of. Introduction the male reproductive system is concerned in part with the production, maturation and storage of male germ cells, the spermatozoa. Palpation of the right testicle revealed no heterogeneous masses.
The anatomy, histology and development of the testis, epididymis and ductus deferens. Histological typing of testis tumours international. Morphological and histomorphological structure of testes of the catfish. Compare the three different cytoskeletal systems 5. Histological structure of testes and ductus epididymis of rusa deer cervus timorensis pattra moonjit1 and adcharatt suwanpugdee2, 3 abstract rusa deer cervus timorensis raising farm has been highly increasing in numbers during the last decade in thailand. Review the function and structure of the organelles involved.
Pdf histological description of the testis, epididymis. The 3d structure of seminiferous tubules, including the number and length of tubules as well as the number of connections with the rete testis, branching points, and blind ends, was assessed. The testes are two ovalshaped organs in the male reproductive system. 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. The study of histological structure of seminiferous. It is an important component of both the male reproductive system and the endocrine system. Histology of testis by dr mohammad manzoor mashwani. As the testis undergoes constant division and cell differentiation, which makes it more vulnerable to toxic substances as this tissue is of great importance for reproduction, this study was conducted to determine the effect of paracetamol on the seminiferous tubules of rabbit testis. The third group, 11% 24 cases, was the highly damaged testis type type iv. The rarest pictures were those of developmental arrest at the stage of.
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