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Topic 14 Vocabulary acrosome allantois amnion asexual reproduction assisted reproductive technology (ART) blastocoel blastocyst blastula budding bulbourethral gland cervix chlamydia chorion chorionic villus cleavage clitoris coelom conception copulation corpus luteum ectoderm ectopic pregnancy egg ejaculation ejaculatory duct embryo endoderm endometrium epididymis external fertilization extraembryonic membranes fetus fertilization fission follicle fragmentation gamete gametogenesis gastrula gastrulation gestation glans homeobox homeotic gene human chorionic gonadotropin (HCG) in vitro fertilization (IVF) induction infertility internal fertilization labia majora labia minora labor menstrual cycle menstruation mesoderm natural family planning neural tube notochord oogenesis orgasm ovarian cycle ovary oviduct ovulation ovum (plural, ova) pattern formation penis placenta positive feedback prepuce primary oocyte primary spermatocyte programmed cell death prostate gland regeneration reproduction scrotum secondary oocyte secondary spermatocyte semen seminal vesicle spermatogenesis seminiferous tubule sexual reproduction sexually transmitted disease (STD) sperm testis (plural, testes) trimester trophoblast uterus vagina vas deferens (plural, vasa deferentia) vasectomy yolk sac zygote