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