Welcome back! I’m going to cut-to-the-chase and just tell you my definition of sexual arousal. Here it goes, for animals and people:

Sexual arousal is the autonomic preparation of the sexual organs for reproduction.

I know this might sound kind of generic and probably bias, to some, but there are very logical reasons for this definition, which I’ll now elaborate on.

  • First of all, by “autonomic preparation of the sexual organs” I mean that the sexual organs of the human or animal in question, undergo an involuntary change; such that this change makes the human or animal in question, ready to do something specific.
    • Obviously, in humans, this change appears as an erect penis in men while in women, it appears as an erect clitoris and an open and self-lubricating vagina.
    • With most other mammals, these changes are more-or-less equivalent to what is seen in people.
    • With all other types of animals, it would seem logical to expect such similar changes.
  • Secondly, that “something specific” I mentioned earlier has most definitely got to be reproduction because of the obvious release and coming together of the male and female gametes, which typically proceeds arousal.
    • For example, in humans and animals that reproduce by similar enough means:
      1. the erect penis, when stimulated enough, ejaculates semen and sperm – the male gamete
      2. the aroused vagina self-lubricates while providing an open passage way to the uterus and fallopian tubes, where you’ll find the ovum – the female gamete
        • It’s pretty obvious that the opened vagina self-lubricates to accommodate the insertion of an erect penis so that when it [the penis] ejaculates, the semen and sperm can easily find their way to the ovum so that fertilization may take place.
    • In animals that reproduce by external fertilization:
      1. mature males and females release their gametes in close proximity.
        • The result of this release is fertilization, with no-doubt this being nature’s intention.

So by the end of the day, a man – whether he calls himself “gay” or “straight” – becomes aroused so that he can ejaculate for the sake of reproducing. Similarly, a woman – whether she calls herself “lesbian” or not – becomes aroused so that her body can accept an erect penis and its ejaculate, for the sake of reproducing. Thus, men and women (and animals) become sexually aroused so that they may reproduce. Obviously, this last conclusion is the answer to my second question, from my last post, i.e. “why do individuals become sexually aroused?” – the answer:

Individuals become sexually aroused so that they can reproduce.

To finish for today’s post, I just wanted to point to the obvious – which I’m sure you’ve already figured out – that the mechanism by which reproduction actually occurs, varies from species to species. Humans, obviously, reproduce by what we call coitus – or penis-vagina sex. Similar types of behavior is seen in many other mammals and birds while many fish and amphibians spawn. What is important to note here is that actions like coitus and spawning simply cannot occur without sexual arousal, which thus, reaffirms reproduction (through coitus, spawning etc.) as the [human or animal] body’s natural motivation behind sexual arousal.

Okay; my next post is going to be very important, not merely because I’m going to be answering my third question from last time, i.e. “what causes individuals to become sexually aroused?” but because I’ll be attempting to show you yet another reason why a lot of people (scientists included) get all muddled up when trying to understand “homosexuality.” Till then, take care and thanks for reading.

A. Stanway, The Lover’s Guide: The art of better love making, Pan Macmillan Publishers, Sydney, 1992, pp. 27-29.