C&A

the time between the first onrush of hormones and full adult physical development. last 3-5 years

Girl's first menstrual period, signaling that she has begun ovulation. pregnacy is biologically possible

boy's first ejaculation of sperm. erections can occur as early as infancy

organic chemical substance that is produced by one body tissue and conveyed via the bloodsteam to another to affect some physiological funstion

gland in the brain that responds to a signal from the hypothalamus by producing many hormones

two glands, located above the kidneys, that produce hormones

sex hormone, considered the chief estrogen.

the paired sex glands. produce hormones and gametes

sex hormone, the best know of the androges.

hormone that affects appetite and is believed to affect the onset of puberty

parts of the body that are directly involved in reproduction, including the bagina, uterus, ovaries, testicles, and penis.

physical traits that are not directly involved in reproduction but that indicate sexual maturity, such as man's beard and woman's breast.

the idea that each new generation forgets what the previous generation learned. As used here, the term refers to knowledge about the harm drugs can do