Monday, December 29, 2008

Inter-taxonomic Romance

"Lull" - Andrew Bird

1 comment:

Mr.Barbara said...

An erection is a complex event that requires the interaction of the brain, nerves, hormones, and blood vessels. This process is separate from ejaculation and orgasm, both of which can occur without an erect penis. The male hormone testosterone, which is secreted by the testicles, controls the function of the penis and a man's sex drive. The brain starts the changes that will produce an erection.