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Fitness for Marriage
The Male Sex Organs
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abnormal abortion adjustment animals artificial insemination baby become behavior birth control body canal cause cervix child childbearing childbirth climax clitoris coitus conception condition contraceptive couple cycle depend develop device diaphragm discharge disease Doctor douche effect ejaculation embryo emotional erotic eugenic experience fact factors Fallopian tubes feel female fertility fetus fitness for marriage frequent frigidity function glands homosexual hormones human hymen inches individual infection infertility insemination instance intercourse large number male Margaret Sanger marital marriage marry masturbation mate mature menses menstrual cycle menstrual period method months mother normal occur offspring organs orgasm ovaries ovulation ovum parents penis physical physician Pill possible pregnancy present problem reproduction safe period satisfactory semen seminal fluid sex act sex organs sex relations sexual desire sexual relations sexual union social sperm cells sterilization stimulation testes tion tubes urethra urine usually uterine uterus vagina woman women young