The Male Reproductive System Essay

When attempting to explain something as intangible and complex as human behavior it is difficult to devise experiments that lead to conclusive results. Sometimes complex problems are easier to solve when they are broken down into smaller pieces or into simpler problems that are more approachable. Using human evolution to explain human behavior is such an example. Evolutionary psychology reaches for the roots of human development when they were in their most basic stages to explain why people behave the way they do. Specifically, explaining human masculinity through science has been a major focus of evolutionary psychology. This paper seeks to explain why masculinity cannot be explained by sociology alone and will present

The definition of masculinity; Is the fact of being a man or having qualities considered typical of a man.

This is due to the lack of the vas deferens, which is the tube that sends the sperms out of the testes to the penis. In woman they can have children they just have more problems with conceiving due to the excessive amounts of mucous in the sexual organs.

The article “The National Conversation in the Wake of Littleton is Missing the Mark" By Jackson Kats and Sut Jhally is about finding the cause of violence and relating it to students who dispense harm to society, as well as other students. There is a focus on masculinity, along with behavior and how that behavior is being influenced by the environment. The article focuses on factors such as peer exclusion, the prevalence of violence in the media and most importantly, violence in relation to gender. .

The gonads are the male and female reproductive organs, the testes (males) and ovaries (females). The testes and ovaries produce androgens (testosterone) and estrogens, these hormones affect aggressiveness, mood, and sexual interest and behavior. Higher levels of these hormones have been shown to promote aggressiveness in both sexes (Morris and Maisto, 2002).

Testes: The function of the testes (following puberty) is to produce spermatozoa and androgens, mainly testosterone. The testes produce sperm; about 300 million are released with each ejaculation.

The SRY gene is a very important aspect in determining the sex of an individual. In fact it is the SRY that specifically could be seen as the powerhouse machine in determining the sex of an individual. The SRY gene commonly called the Sex Determining Region of the Y- chromosome can normally cause the testis to develop rather than an ovary when it is presented in the chromosome. The function of the SRY gene is to provide a set of instructions for making the Sex-Determining region of the Y protein, which can also perform as a transcription factor, binding to specific regions of DNA and aid in the control and regulation of particular genes. Changes

The sperm of the three difference species observed in lab all had the same basic structure, heads and tail. Additionally, the sperm were very small in size, especially in comparison to the ovary cross-section that was examined. Overall, the bull sperm appeared to have the largest head and the human sperm appeared to be the shortest in length of the three. The rat sperm had the longest length with a small hook shaped head. Although the sperm of the rat, human, and bull differed slightly, the over structure of the sperm cells were same.

Semen is the male reproductive fluid, containing spermatozoa in suspension. Sperm is a male reproductive cell. Prostate is a gland surrounding the neck of the bladder in male mammals and releasing prostatic fluid. Urethra is a duct by which urine is convey out of the body from the bladder, and which in male vertebrates also conveys semen. Penis is the male genital organ of higher vertebrates, carrying the duct for the transfer of sperm during copulation. Glans is the head of a penis. A shaft is the cylindrical part of the penis between the scrotum and head. Seminiferous tubules is any of the numerous long convoluted tubules in the testis which are the sites where spermatozoa mature. Seminal vesicles is each of a pair of glands that open into the vas deferens near its junction with the urethra and secrete many of the components of semen. Bladder is a membranous sac in human and other animals, which urine is collected for excretion.

The pituitary gland in the middle of the brain sends hormone signals to the testis to make them secrete testosterone, which stimulates sperm production. The challenge is to stop the sperm production, but maintain testosterone levels. When the shot of testosterone and progestin is injected a signal is sent to the pituitary gland fooling it in thinking the testis are producing sperm as a result both sperm and testosterone production are shut down. That’s when the injected testosterone kicks in bringing a man’s levels back to normal.

• Testosterone - a male hormone produced mainly in the testes. Testosterone causes the development of male sex characteristics, such as a deep voice and a beard. It also strengthens muscles and bone mass.

The male reproductive system is divided into two categories: internal and external reproductive organs. External organs are outside the body and internal organs are inside the body.

the sperm are categorized as masculine and feminine. Finally, it seems that the end goal of

Take the 1960s notion of free love, combine with today's sexually active teenagers who expect no emotional commitment, and you have the modern definition for “hook up.” The term evolved just as many ideas about sex have in this last century. Hooking up is no longer just kissing, it involves oral sex and also intercourse, it is all about the casual sex.

The reproductive system is questionably the body system that is the most important influence on life as we know it. It is the w ay in which we procreate and ensure our existence as a species. However, the penis is only one part of the male reproductive system, which constitutes of a series responsible for generating, storing, and transporting the genetic material contained in the sperm cells. The main organs include: testicles (or testes), the epididymides, the vas deferens, the ejaculatory duct, the urethra, and the penis. Others are the scrotum, urogenital opening, and the prostate gland.