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The mating game (QM)

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Imberbe
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Re: The mating game (QM)

Unread postby Imberbe » Sun Aug 22, 2010 9:30 pm

Now that last part I can understand. :thumbs_up:

The basic answer is that the type of vessels in the penis of the two groups differ. You find fibro-elastic and musculocavernous types of vessels.

The musculocavernous penis of humans, horses, cats and dogs contains large cavernous spaces which fill up with blood during an erection. It can almost be compared with a soft sponge, that needs to be filled. This takes time to fill and is fully dependent on blood pressure.

The fibroelastic penis of the bull, antelope, and zebra contains more fibroelastic tissue with smaller cavernous spaces and a s-shaped flexure. This means that the "folded" penis is housed in a semi erect state inside the animals body, and need only be released. As soon as this happens it straightens out, and the blood need only fill a few spaces to have a fully erect penis.
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Re: The mating game (QM)

Unread postby Elzet » Sun Aug 22, 2010 9:34 pm

Elzet wrote:In ungulates, erection occurs primarily by extrusion of the fibro-elastic penis. This is largely accomplished by penile muscles.

If I am on the right track, I shall elucidate.



So my initial answer was correct too? :twisted: :lol:
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Re: The mating game (QM)

Unread postby Hippo-fan » Sun Aug 22, 2010 9:34 pm

Elzet wrote:In short, it is merely pushed out, and does not need to inflate, so to speak.


Sounds like the Ooms matras :shock:
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Re: The mating game (QM)

Unread postby Imberbe » Sun Aug 22, 2010 9:46 pm

Elzet wrote:
Elzet wrote:In ungulates, erection occurs primarily by extrusion of the fibro-elastic penis. This is largely accomplished by penile muscles.

If I am on the right track, I shall elucidate.



So my initial answer was correct too? :twisted: :lol:


You were on a fishing expedition. (But you were fishing in the correct area!) :twisted:
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Re: The mating game (QM)

Unread postby Elzet » Sun Aug 22, 2010 9:50 pm

Hippo-fan wrote:
Elzet wrote:In short, it is merely pushed out, and does not need to inflate, so to speak.


Sounds like the Ooms matras :shock:




A very funny smilie is needed here. :lol: :lol: :lol:
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Re: The mating game (QM)

Unread postby Elzet » Sun Aug 22, 2010 9:52 pm

Imberbe wrote:
Elzet wrote:
Elzet wrote:In ungulates, erection occurs primarily by extrusion of the fibro-elastic penis. This is largely accomplished by penile muscles.

If I am on the right track, I shall elucidate.



So my initial answer was correct too? :twisted: :lol:


You were on a fishing expedition. (But you were fishing in the correct area!) :twisted:



A fishing smilie is needed here. :lol: :lol: :lol: :tongue:
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Re: The mating game (QM)

Unread postby Imberbe » Sun Aug 22, 2010 11:39 pm

The human penis differs in one very notable aspect from that of primates such as baboons, gorillas and chimpanzees. What is that anatomical feature?
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Re: The mating game (QM)

Unread postby Hippo-fan » Mon Aug 23, 2010 6:42 am

Along with size, the human penis is unique because of its structure. The human penis lacks an erectile bone (instead it relies entirely on engorgement with blood to reach its erect state).
The human penis has a distinctive coronal ridge. Also, the human penis is alone in having a foreskin.

The human penis is unusual in many different respects. It is abnormally large, compared to other primate species. The average length of a human penis is five to seven inches. The closest genetic relatives to humans are chimpanzees. The average chimpanzee penis is about half of the size of human penises, or about three inches. The gorilla's penis is the smallest, at only an inch long.
The human penis has a distinctive coronal ridge. Also, the human penis is alone in having a foreskin.
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Re: The mating game (QM)

Unread postby Imberbe » Mon Aug 23, 2010 12:51 pm

:thumbs_up:

Yes, I was looking for the lack of the baculum (or erectile bone, penis bone) in humans, which plays a part in keeping the erection in animals such as all other primates, and most other mammals.
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Re: The mating game (QM)

Unread postby onewithnature » Mon Aug 23, 2010 1:10 pm

Interesting! Perhaps an adaptation because of the upright stance of humans, and therefore a potential vulnerability to impact on an erect penis, with unpleasant consequences for the victim? Having only erectile tissue has probably allowed the human penis to be easily tucked away for storage until use is required. At least the makers of ED drugs probably are very thankful that we have no erectile bone. :hmz:
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Re: The mating game (QM)

Unread postby Elzet » Mon Aug 23, 2010 7:48 pm

Hippo-fan! Image
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Re: The mating game (QM)

Unread postby Hippo-fan » Mon Aug 23, 2010 10:06 pm

Image Image Image

This chart tells something about sperm. Do you know what?

Image
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Re: The mating game (QM)

Unread postby Imberbe » Mon Aug 23, 2010 11:04 pm

I don't know the chart but is probably an indication of a. the relative fertility of the sperm of the different species with Gorilla being the least fertile and chimpanzee the most, and b. of the sex ratio achieved purely through fertilization.

I will wait for your information before posting the next question. :wink:
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Re: The mating game (QM)

Unread postby Elzet » Mon Aug 23, 2010 11:20 pm

Swimming speed and escape force distributions.
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Re: The mating game (QM)

Unread postby onewithnature » Tue Aug 24, 2010 12:57 am

I would think that the values on the Y-axis of the graph represent the concentrations of sperm per millilitre of ejaculate (in millions), as the average for a human male is around 100.
As IB said, the Chimp and Macaque have greater concentrations of sperm per ml than humans, while the gorilla has less; therefore related to relative fertilities of the different primates, assuming of course all specimens are in prime condition!
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