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Yes there is.
In 2002 a group of French scientists published Magnetic Resonance Images (MRI) of a couple having sex in both the missionary and rear entry positions. This study also included previously published schematic diagrams of penile insertion in both of these positions.
The study with the diagrams is:
Magnetic Resonance Imaging (MRI) of Sexual Intercourse: Second Experience
in Missionary Position and Initial Experience in Posterior Position;
A. FAIX, et al.; Journal of Sex & Marital Therapy, 28(s):63--76, 2002
What else can I help you with?
What happens if you put a penis in a vagina?
It's sexual intercourse when you put a penis into a vagina.
What happens when the penis enters into the vagina?
This is known as sexual intercourse. After the penis is inserted into the vagina, typically the male proceeds to thrust his penis in and out of the vagina until orgasm is achieved.The vagina gets wet from the ejaculated fluids released from the penis.The female gets an orgasm when the penis enters the vagina.
Does the penis have to touch the vagina directly?
It doesn't have to, but the majority of sex involves the penis inside the vagina.
What is the opposite of penis?
Vagina
Which part of the vagina is penis inserted?
The penis is inserted into the opening at the front of the vagina.
What if your penis is to big for the vagina?
Its ok. You can still have sex. You can force the penis inside the vagina coz th vagina is an elastical part of the body. adndin the uterus the baby can fit what are the penis, sure thing it will also.
How do you fit a penis into a vagina?
A penis fits just fine. The vagina stretches to accomodate it. You can use your hand to put it in place.
What does a stock controller do?
penis in the vagina
How do you menstrubate?
You rub your penis or vagina.
What subgroup is a snake in?
penis+vagina!
Its the highland of your penis?
the highland of your penis is going to be inserted in my vagina soon
How do you know if they are girls or boys?
If you have a penis, or a vagina. If that option isn't available, then DNA testing. If you have both a penis and a vagina then the term is morphadite.
