Introduction / Summary (Nov 2009): Hello and welcome to our Sexuality pages. The video provides a good introduction which we think you will enjoy!
While this is not a pornographic site, it is provocative - founded upon what people search on the Internet (which is very interesting!). We then relate this to our biological and cultural evolution.
Sex is obviously important to people - and if you want to improve your sexual relationships then knowing the truth about our human evolution is the best foundation. By opening our minds to a greater diversity of behaviors, this knowledge will help you creatively cultivate healthy pleasurable moral attitudes and sexy smutty relationships (free from religious guilt & cultural myths).
Support an open honest discussion on the truth of our sexual evolution and behaviour. If you support sex positive, moral, informed sexual behaviour please share this knowledge. (These pages have a diverse collection of fascinating information relating to our human sexual evolution so people will appreciate it).
About this Philosophy Website on Truth and Reality: We are listed as one of the top Philosophy Websites on the Internet with around 300,000 page views each week. The central thesis of philosophy is that we must know the truth to act wisely and truth is founded on a correct understanding of physical reality. Clearly people have a strong sexual instinct due to our evolution and survival as a species. However, our planet faces many serious environmental problems, thus our survival now depends on a true understanding of our place in nature, as a way of better protecting life on earth. Truth and reality are beautiful subjects which are profoundly important to our future survival - they are the source of wisdom, the foundation for everything you see and experience in the universe!
Sincerely,
Karene Jade Howie
P. S. I would really like these pages to be fantastic, so please comment / rate this page or suggest content!
Male Sexual Health: Erections
Anatomy, Evolutionary Biology, Puberty in Teen Boys, Arousal
Male Physiology & Sexual Function - The Penis, Erections, Normal Size, Disorders
A comprehensive essay on male sexual and reproductive functioning. Topics include: normal size of the male sexual organs, aging and sexuality, role of neurochemicals in each stage of the sexual cycle, erections, influence of psychological factors, drugs and disease on all aspects of sexual functioning and the investigation and treatment of male sexual disorders.
Read More: Male Sexual Function, Disorders & Treatment
Read More: Normal Penis & Testicle Size
From the website: Penis Diagram and Mechanism of Erection
Figure 1. Anatomy and mechanism of penile erection. The cavernous nerves (autonomic), which travel postarterolaterally to the prostate, enter the corpora cavernosa and corpus spongiosum to regulate penile blood flow during erection and detumescence. The dorsal nerves (somatic), which are branches of the pudendal nerves, are primarily responsible for penile sensation. The mechanisms of erection and flaccidity are shown in the upper and lower insets, respectively. During erection, relaxation of the trabecular smooth muscle and vasodilatation of the arterioles results in a severalfold increase in blood flow, which expands the sinusoidal spaces to lengthen and enlarge the penis. The expansion of the sinusoids compresses the subtunical venular plexus against the tunica albuginea. In addition, stretching of the tunica compresses the emissary veins, thus reducing the outflow of blood to a minimum. In the flaccid state, inflow through the constricted and tortuous helicine arteries is minimal, and there is free outflow via the subtunical venular plexus. [Reproduced from T. F. Lue: N Engl J Med 342:1802–1813, 2000 (2 ). © Massachusetts Medical Society. All rights reserved.]
Male Sexuality - Arousal, Erection, Penis Size & Orgasm
From the essay: 'An erection of the penis occurs as the spongy tissues
of the penis are engorged with blood. There is one large primary artery
responsible for blood flow into the penis, but several veins that drain
the penis of blood. When an erection is not happening, the inflow of blood
and the outflow is maintained in balance and the penis remains flaccid.
During erection, blood flows into the penis and holes in the spongy tissue
in the penis fill with blood. At the same time, flaps in the veins leading
out of the penis enlarge, cutting off the drainage. As a result, the penis
fills with blood. As more and more blood flows in than out, the penis enlarges
and becomes harder. Finally, veins in the penis are compressed from the
increasing pressure from the erection itself. Heart rate and blood pressure
also increase, the pressure of blood into the penis increases, keeping the
penis hard.
The size of the erection may be relatively unrelated to the size of the
non-erect penis. Typically, those with smaller penises tend to enlarge to
a greater degree when erect, so the differences in the size of the erect
penis may not be that great. According to the book Man's Body,
the average flaccid penis is about 3 3/4 inches long with most falling between
3 1/4 and 4 1/4 inches, though a few are outside this range. The average
erect penis is 6 1/4 inches, with most between 5 and 7 inches.'
Male
Sexuality - Desire, Penis Size, Erections
http://www.whitelotuseast.com/MaleSexuality.htm
Evolution, Human Reproduction & Fertilization: Sperm Competition & the Penis
A very interesting essay from the journal of Evolutionary Psychology on sperm competition and its role in shaping the human penis, (size, length, width, forceful ejaculation), evolutionary strategies for successful fertilization i.e. semen displacement and coagulation. On sexual intercourse and evolutionary benefits of deep penis thrusting, function of the foreskin and effects of circumcision, premature ejaculation, female reproductive strategies i.e. copulation with multiple partners, human sexual behaviour and wife rape (males having sex with their partner if suspecting them of infidelity).
Read More: Evolution, Human Reproduction & Fertilization: Sperm Competition, Semen Displacement & Penis
This
Page Title: 'Male Sexual Health: Penis Erections. Biology, Puberty
in Teen Boys, Sexual Arousal, Erotic Art, Pictures'.
Want to be Involved? Join us in this research,
which provides an excellent opportunity to present to the world the latest
knowledge about the thing we all find most interesting - sex! The work will
not just benefit humanity, it will profoundly enhance your own sexuality
as you learn more about our complex and diverse sexual evolution.
We seek help in finding the latest scientific (evolutionary)
research on our biological and cultural sexual evolution and distributing
content (overviews / summaries) to relevant pages.
This site is well respected. We are listed as the
Top
Philosophy Website on the Internet with around 300,000 page views each
week. So your contributions will be seen and read, and will be providing
humanity with a great source of wisdom about a very important subject (that
currently suffers due to cultural / religious myths).
If you would like to be involved (or have comments about this website) please
write to us using the form lower on this page.
Many thanks! Karene
Analyse
any human emotion, no matter how far it may be removed from the sphere of
sex, and you are sure to discover somewhere the primal impulse, to which
life owes its perpetuation. ... The primitive stages can always be re-established;
the primitive mind is, in the fullest meaning of the word, imperishable.
... Mans most disagreeable habits and idiosyncrasies, his deceit, his cowardice,
his lack of reverence, are engendered by his incomplete adjustment to a
complicated civilisation. It is the result of the conflict between our instincts
and our culture. (Sigmund Freud)
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Male Sexual Health: Penis Erections. Biology, Puberty
in Teen Boys, Sexual Arousal, Erotic Art, Pictures
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