Ts of testis under microscope

The testes are made up of several lobes that contain a network of narrow tubes called seminiferous tubules. These are where sperm are produced in a process known as spermatogenesis. As the sperm cells develop and mature, they move through these tubules until they reach a wider conduit called the rete testes. Testicular torsion is a medical emergency. Unless the flow of blood is restored within six hours, the risk of testicular damage and infertility is high. Severe cases can even result in the loss of the testicle. Testicular Cancer Fortunately, testicular cancer is highly curable, and death rates are low. Unlike other cancers, it is more likely to affect younger males. Testis is the medical term for a single testicle. The plural of testis is testes. The testes are the male reproductive organs that make sperm and the hormone testosterone. The testes (commonly known as balls, nuts, rocks, stones, or bollocks) are housed in the scrotum. Testes can also be called testicles. • • Tiwana MS, Leslie SW. • Gurney JK, Mcglynn KA, Stanley J, et al. Nat Rev Urol. 2017;14(9):534-548. doi:10.1038/nrurol.2017.90 • Piltoft JS, Larsen SB, Dalton SO, et al. Acta Oncol. 2017;56(2):220-224. doi:10.1080/0284186X.2016.1266085 • Myers A, Morganstern B, Fine R. Urology. 2017;104:196-197. doi:10.1016/j.urology.2017.03.017 • Kajal P, Rattan KN, Bhutani N, Sangwan V. Int J Surg Case Rep. 2017;31:167-169. doi:10.1016/j.ijscr.2017.01.044 • Trojian TH, Lishnak TS, Heiman D. Am Fam Physician. • Alsaikh...

Male Reproductive Male Reproductive System OBJECTIVES: At the end of this lab, you should be able to: 1. Identify the seminiferous tubules of the testis and distinguish the stages of spermatogenesis. 2. Identify the Sertoli and Leydig cells and understand their functions. 3. Identify and distinguish between the tubular structures through which sperm passes from the seminiferous tubules to the penile urethra. 4. Identify the seminal vesicle and prostate gland and understand their functions. SLIDES FOR THIS LABORATORY: 27, 28, 29, 30, 31, 32, 33, 34, 81, and Supplemental Slides 104 and 108 TESTIS Slide 27 Testis, epididymis, vas deferens, infant. Examine the slide w/o the microscope and note the testis, head of epididymis and vas deferens. With low power objective identify the thick dense regular connective tissue capsule surrounding the testis; this is the SEMINIFEROUS TUBULES Slide 29 Testis, adult. Note the highly coiled structure of the Identify the following germ cell types within the seminiferous tubules: 1. 2. 3. Supplemental Slide 104 Testis, monkey. Again, observe the Supplemental Slide 108 Testis, human. Use this slide to find RETE TESTIS Slide 28 Testis, adult. Examine the EPIDIDYMIS & EFFERENT DUCTULES Slide 30 Epididymis, efferent ducts, monkey. The DUCTUS DEFERENS & SPERMATIC CORD Slide 31 Vas deferens. The Slide 81 Spermatic cord. In the spermatic cord, there are bundles of SEMINAL VESICLES Slide 32 Seminal vesicle. Note the foldings of the mucosa, the PROSTAT...

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In this explainer, we will learn how to describe the structure of the transverse section of the testes and that of the seminiferous tubules and the process of sperm production. Did you know that the process of sperm production requires a constant temperature that is about 2– 3 ∘ C lower than the body temperature? According to scientists, this explains why the scrotum, a sac of skin that contains the testes, where the process of sperm production occurs, is located outside the human body. Such cooler temperatures may also be helpful in preventing mutations in sperm cells. Generally, human males have two testes. Testes are the site of sperm production, a process that is often called spermatogenesis. The prefix spermato- refers to the sperm cells that are formed, and the suffix - genesis comes from a Greek word meaning “the creation of something.” Sperm cells are the male gametes, and their function is to fertilize the female egg cell during the process of sexual reproduction. Key Term: Spermatogenesis Spermatogenesis is the process by which a mature sperm cell is produced and developed. The testes are also responsible for producing most of the male sex hormones, such as testosterone. These hormones, sometimes called androgens, help in the development of the male sex organs and secondary sexual characteristics, such as deepening of the voice and development of facial hair, at puberty. Let’s have a look at the overall structure of a testis, which you can see in Figure 1 below, ...