The male and female parts of the human reproductive system can bring together an egg and a sperm so that they join and begin the development of a new human being. The female system also protects and nourishes the developing foetus during the nine months of pregnancy. About 150,000 eggs are...
The male reproductive system (Fig. 18.1) consists of paired primary sex organs, the testes, and a series of secondary sex organs. The secondary organs are the (paired) rete testis, the ductuli...doi:10.1007/978-1-4613-8199-0_18
The male reproductive system is composed of the testes, epididymis, vas deferens, and male accessory sex glands, including the prostate and seminal vesicles. Other structures, such as the efferent ducts, bulbourethral gland, and ejaculatory ducts are part of the male reproductive system, but will...
This introductory chapter offers a basic overview ofmale reproduction, specifically theanatomyand physiology of themale reproductive system. A good understanding of normal anatomy and physiology is necessary to (1) fully understand the severity of toxicant-induced damage to the structure and/or function...
Inferred paternity and male reproductive success in a killer whale (Orcinus orca) population. J Hered. 2011;102:537–53. Article PubMed Google Scholar Fossi C, Marsili L. The use of non-destructive biomarkers in the study of marine mammals. Biomarkers. 1997;2:205–16. Article CAS Google...
The success of male reproductive strategies can be measured by determining the number of sired infants that survive to independence. Because most primate females mate with more than one male during a reproductive cycle, genetic tests are required to determine paternity. As the methods for non-invasi...
The necessity for a close functional relationship between the male reproductive tract and the immune system is self-evident. Spermatogenic cells are particularly susceptible to immunological responses, and activation of immunity against sperm or other elements of the reproductive tract can lead to androgen...
Polygyny is the association of one male with multiple females. This mating system is found in a few birds and insects, but is most common in mammals. Polygyny is a strategy used by males to increase their reproductive fitness. Resource Defense Polygyny In resource defense polygyny, groups of...
sex-related issues. Ursula K. Le Guin’sThe Left Hand of Darkness(1969) depicts a space-based human civilization whose members are, similarly to some fish (e.g. clownfish and angelfish) and other animals, “ambisexual” and able at times to assume either male or female reproductive ...
(CNS), systemic blood pressure, genitourinary system, and psychological health. This narrative review aims to discuss the reproductive toxicity and sexual dysfunction (SD) caused by regular khat usage in humans and experimental animals. Animal studies found dose-dependent impacts on male reproductive ...