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11 Cards in this Set

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gonads
testes in males and ovaries in females
testes
located in the scrotum; produce androgens (testosterone), sex hormones
ovaries
located in the pelvic cavity; produce estrogens and progesterone, sex hormones
anabolic steroids
testosterone or related chemicals
estrogens and progesterone
necessary for egg maturation and responsible for secondary sex characteristics
thymus
secretes hormones called thymosins; lymphocytes
thymosin
aid in differentiation of lymphocytes packed inside lobules
pineal gland
biorythms; located in the brain; produces melatonin, primarily at night
circadian rhythms
daily 24 hour cycles; biological clock
prostaglandins
chemical signals that cause muscles to contract; pain and discomfort of menstruation
pheromones
chemical signals that act between individuals