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When does mating usually occur
at peak female fertility (estrus)
What do females in estrus produce to attract
pheromones
signs of female receptivity
tail movement
urination
lordosis (standing still)
what causes erection physiologically
parasympathetic vasodilation
Nitric oxide → cGMP → smooth muscle relaxation
what are the two phases of ejaculation
emission → seme enters urethra (sympathetic)
expulsion → semen exits penis (muscle contraction)
what are the four phases of sexual response
excitement
plateau
orgasm
resolution
what causes lubrication in females
fluid from vaginal capillaries (parasympathetic response)
what hormone is involved in orgasm
oxytocin
why use ART
increase offspring production
improve genetics
support food production
conserve endangered species