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If you mean "Why does a penis become erect?' then the answer is simple. During the erectile process, excess blood flows into the Penis causing the sex organ to swell into a longer and harder extension of the body. This can happen because of sexual stimulation, puberty, or "happy thoughts" ( lol ). The reason it contracts into its smaller self is because the blood is flowing out of the penis.
blood flow and release to and from the penis causes it to expand and contract...
What else can I help you with?
Does a vagina get big from the penis or the plessure?
It gets slightly stretched by anything entering or exiting. (Male Parts, Sexual Toys, Random Object, Hands, Babies) But amazingly the Vagina is interesting muscle and does contract when it has no more need for the large object.
What is the difference between expand and contract?
Expand refers to an increase in size, such as blowing up a balloon. Contract refers to decreasing the size or making something tight or narrow like an artery that cannot get blood due to being too narrow.
What is the opposite of expanding?
The opposite of expand is contract (in some uses, to shrink).For expand (increase), the opposite can be reduce or decrease.For expand (widen), the opposite would be to narrow.For expand (inflate) the opposite would be to deflate.
Connect the ribs allowing them to expand and contract?
The costal cartilage connects the ribs to the sternum, allowing flexibility for expansion and contraction during breathing. The intercostal muscles between the ribs also play a key role in this movement.
What controls the size of the pupil in the human eye?
The size of the pupil in the human eye is controlled by the iris, which is a ring of muscle that can expand or contract to adjust the size of the pupil.
Does matter expand or contract when it is heated?
Expand
What matter expand and contract?
explain how temperature affects matter using the words contract and expand
Does matter expand or contract when it's heated?
Expand
What do muscles need in order to expand and stretch?
They have to either expand or contract through movement. They can only expand and contract as far as their tissues will allow,
Will an inert gas expand and contract with temperature?
It will contract.
Do gases also contract and expand with changing temperatures?
Yes,gases also contract and expand with changing temperatures
What type of rocks expand?
All rock can expand or contract.
When things get bigger you say they contract converge or expand?
They expand.
What 6 letter word is the opposite of contract?
"EXPAND"
Does structure contract or expand?
If a structure is made of a flimsy type of material, it may cause the structure to contract or expand. Bridges are a type of structure that may expand or contract depending on the weather environment the bridge is in.
What is the average depth of a vagaina?
The vagina is a very muscular organ and therefore can expand and contract. Without any stimulation, the vagina is about 3 inches deep, but can expand. So if you are having sex, and the guy has an 8 inch penis, that you will still receive full satisfaction.
Does solid food expand or contract when frozen?
If the food has water in it then it will expand.
