The organs of the male reproductive system are specialized for the following functions: To produce, maintain and transport sperm the male reproductive cells and protective fluid semen To discharge sperm within the female reproductive tract To produce and secrete male sex hormones The male reproductive anatomy includes internal and external structures. What are the external male reproductive structures? The external structures of the male reproductive system are the penis, the scrotum and the testicles. Penis — The penis is the male organ for sexual intercourse.
human epididymis: its function in sperm maturation | Human Reproduction Update | Oxford Academic
Pre-Lab Reading Overview of the Male Reproductive System The male reproductive system, like the internet, can be thought of as a series of tubes. These tubes deliver the male gametes from their site of production in the testes to their destination outside the body. The system itself is divided into two distinct units: The testes , located outside the major body cavity and housed in the scrotum. The excretory duct system , which transports the sperm from the testes and whose accessory glands produce and modify the contents of semen.
This is an open access article distributed under the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Male reproductive function in the general population raises an increased attention due to reports indicating declining sperm counts, increased occurrence of testicular cancer, cryptorchidism, and hypospadias. It is also hypothesized that prolonged exposure of the developing male, during both fetal and postnatal life, to exogenous estrogens could reduce Sertoli cell number and thus reduce sperm output and sperm counts in adult life. A male contributory factor is involved in approximately half of these cases, but most of the causes of reduced semen quality and other disturbances of male reproductive function are unknown. The association between the cryptorchidism and infertility is one of the most studied potential causes of infertility.
Spermatocytogenesis The process of spermatogenesis as the cells progress from primary spermatocytes, to secondary spermatocytes, to spermatids, to Sperm Full diagram of human spermatogenesis Spermatocytogenesis is the male form of gametocytogenesis and results in the formation of spermatocytes possessing half the normal complement of genetic material. In spermatocytogenesis, a diploid spermatogonium , which resides in the basal compartment of the seminiferous tubules, divides mitotically, producing two diploid intermediate cells called primary spermatocytes. Each primary spermatocyte then moves into the adluminal compartment of the seminiferous tubules and duplicates its DNA and subsequently undergoes meiosis I to produce two haploid secondary spermatocytes , which will later divide once more into haploid spermatids. This division implicates sources of genetic variation, such as random inclusion of either parental chromosomes, and chromosomal crossover that increases the genetic variability of the gamete.