In men the penis and in women the clitoris and the vagina which also gets swollen.
The corpora cavernosa of the penis fills with blood.
nipples
When a man thinks about things sexual his penis becomes erect until left alone or satisfied
The penis is the organ that becomes erect when its tissues fill with blood.
sexual stimulation just like a male
Erect is defined as:Raise: construct, build, or erect; "Raise a barn"Upright in position or posture; "an erect stature"; erect flower stalks; for a dog, an erect tail indicates aggressionRear: cause to rise upTumid: of sexual organs; stiff and rigid- wordnetweb.princeton.edu
The clitoris is the erectile tissue in the female. It is analogous to male penis. It gets erect during sexual excitement.
It is sex. When a man insert his erect peenis into a woman's vagina and moves peenis in and out.
Meaning, erect human. (Standing up/walking).
No it becomes an Erect Penis
To produce sperm, make sure your penis is erect and masturbate, or, have sexual intercourse.
Penis (in men) Clitoris, nipples (in women)
When you are sexually attracted to someone you are about to have sex with your penis will automatically erect ready for it. If it does not then you may have an erectile dysfunction or be very nervous. The first time a male has sexual intercourse he may find he is nervous and not erect or he may find he ejaculates very quickly (Premature ejaculation). The thing is not to sleep with lots of different partners. Have a loving relationship with one partner and you should not have erection problems.