Talk:Human Physiology/The male reproductive system

Is there any information on the discolouration of seminal fluid in older males?

Images
I notice that you only have one image in this chapter, so I went out and found a few new ones for you:

There are a number of other images on the server that are...more graphic. You can find some of these images at Commons:Category:Penis, Commons:Category:Semen and Commons:Category:Testicles. I would double-check with your professor before you put any images of nude people in the book, however. --Whiteknight (talk) (projects) 23:34, 7 August 2006 (UTC)

Possible additions
You may want to consider adding more material about spermatogenesis (what is going on in the seminiferous tubules?), semen content (contribution of various glands and functions of those secretions), production of testosterone by cells of Leydig in the testicles, and maybe more on the processes of erection and ejaculation. I think it is fine that you are concise. Provophys 03:21, 8 August 2006 (UTC)

Cells of Leydig
I added a section on cells of leydig and production of testosterone. I'm wondering if I should go more into detail or not. -Shaleneroberts, Apr 11, 2007

Overview of Male Reproductive System Structures & Function
I added this section. It really needs to be made into a table or two, but I don't know how. If anyone knows how to put things into tables, please feel free! And I don't really like the heading I came up with. Any ideas for a better heading? -Shaleneroberts, Apr 11, 2007

Chemotaxis
Chemotaxis: Chemotaxis is a kind of taxis, in which bodily cells, bacteria, and other single-cell or multicellular organisms direct their movements according to certain chemicals in their environment. This is important for bacteria to find food (for example, glucose) by swimming towards the highest concentration of food molecules, or to flee from poisons (for example, phenol). In multicellular organisms, chemotaxis is critical to development as well as normal function. In addition, it has been recognized that mechanisms that allow chemotaxis in animals can be subverted during cancer metastasis.

I added this to the glossary, but I'm wondering if I should add it to the sperm production after the last paragraph. I think it's necessary to add it somewhere, because I don't know what chemotaxis is and it was mentioned in the "sperm production" section. Anyone's thoughts? -Shaleneroberts, Apr. 11, 2007

Puberty
The word apocrine glands is mentioned in the third stage of puberty. I added an explanation of it in the glossary but was wondering if it should be added elsewhere as well. Any thoughts? -Shaleneroberts, Apr.11, 2007

Sertoli Cells
Added this under "structure", but I don't know if it's too much info. How in-depth do we want to go with this? Anyone feel free to make suggestions or edit it yourself. -Shaleneroberts, Apr. 11, 2007

Height growth in boys
What is estradiol? Is that a typo? It's in this paragraph. Anyone know? I think we need to put in an explanation if that is indeed the word it's supposed to be. -Shaleneroberts, Apr. 11, 2007

Height growth in boys Compared to girls' early growth spurt, growth accelerates more slowly in boys and lasts longer, resulting in a taller adult stature among males than females (on average about 10 cm or 4 inches). The difference is attributed to the much greater potency of estradiol compared to testosterone in promoting bone growth, maturation, and epiphyseal closure. In boys, growth begins to accelerate about 9 months after the first signs of testicular enlargement and the peak year of the growth spurt occurs about 2 years after the onset of puberty, reaching a peak velocity of about 8.5-12 cm or 3.5-5 inches per year. The feet and hands experience their growth spurt first, followed by the limbs, and finally ending in the trunk. Epiphyseal closure and adult height are reached more slowly, at an average age of about 17.5 years. As in girls, this last growth primarily involves the spine rather than the limbs.


 * According to Merriam-Webster Dictionary online, estradiol is "a natural estrogenic hormone that is a phenolic alcohol C 18 H 24 O 2 secreted chiefly by the ovaries, that is the most potent of the naturally occurring estrogens" Chemical formula shown uses subscripts - it's 18 carbons, 24 hydrogens and 2 oxygens.71.89.113.88 (discuss) 22:05, 13 August 2012 (UTC)

Next to last sentence under epididymis
"Epididymis keeps sperms for sometimes, gives nourishment to it." ???? Please fix this atrocious sentence. I would make a stab at it, but the page appears locked for editing and I'm not entirely sure what the writer intended to say anyway.71.89.113.88 (discuss) 21:42, 13 August 2012 (UTC)

Zinc
What is the reference/source used for the prostate gland? Here it mentions that the prostate contributes zinc to the fluid, but according to my Textbook (Human Physiology: an integrative approach, 7th edition by Dee Unglaub Silverthorn) the origin of zinc and its function are still unknown.