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Reproductive system
terms and definitions
| Question | Answer |
|---|---|
| tubes connecting the ovaries to the uterus | Fallopian Tube |
| 1st trimester | 1-12 weeks |
| 2nd trimester of pregnancy | fetus undergoes tremendous amount of GROWTH... face forms, toes/fingers elongate, moves around in amniotic fluid |
| Heredity | Passing of traits from parents to offspring |
| 3rd trimester of pregnancy | 7/8th month: continued rapid growth and further brain development...9th month: antibody transport occurs from mother to fetus growth slows and fetus becomes less active, for less room to move is available |
| number of chromosomes that each gamete cell carries | 23 |
| number of chromosomes that each human body cell has | 46 |
| puberty | the period of sexual maturation, during which a person becomes capable of reproducing. Their bodies produce a higher amount of growth hormones. |
| sexual reproduction | A reproductive process that involves two parents that combine their genetic material to produce a new organism, which differs from both parents |
| Fertilization | Process in sexual reproduction in which the sperm fuses with the nucleus of the egg cell to form a new cell |
| fetus | the developing human organism from 9 weeks after conception to birth |
| embryo | the developing human organism from about 2 weeks after fertilization through the second month |
| Menstruation | monthly shedding of the uterine lining |
| menstrual cycle | Cycle during which an egg develops and is released from an ovary and the uterus is prepared to receive a fertilized egg. |
| progesterone | A hormone produced by the ovaries which acts with estrogen to bring about the menstral cycle. |
| Estrogen | A sex hormone, secreted in greater amounts by females than by males. In nonhuman female mammals, estrogen levels peak during ovulation, promoting sexual receptivity. |
| Hollow, muscular organ that nourishes and protects the fetus until birth | Uterus |
| This is the lining of the uterus to which the fertilized egg implants. This lining provides protection and nourishment to the growing embryo. | Uterine Lining/Endometrium |
| Muscular elastic passageway with soft flexible lining that is connected to the uterus by the cervix, also called the birth canal because it is the last part of the body that the baby goes through during the birth process. | Vagina |
| is the opening at the bottom of the uterus that leads into the vagina | Cervix |
| releases a fluid that is rich in sugars and gives the sperm energy. Also has a clotting agent that makes the fluid sticky. | Seminal Vesicle |
| Secretes a fluid that helps to neutralize the acidity of the urethra and vagina. | Prostate Gland |
| Transports sperm from the epididymis to the urethra | Vas deferens |
| Epididymis | Stores sperm cells |
| Passage way through which urine and sperm leave the body. | Urethra |
| external skin sac that houses and helps to protect the testes | Scrotum |
| coiled tube that is attached to the vas deferens and the testicle where sperm mature and are stored here | Epididymis |
| secretes testosterone and produces sperm | Testicle |
| Hormone responsible for sperm production and the physical changes that males go through at they get older. | Testosterone |
| the stage of growth and development when secondary sex characteristics appears in males and females. | Puberty |
| the release of a mature ovum from an ovary | Ovulation |
| Choosing not to engage in any risk behaviors | Abstinence |
| Increase in perspiration, Widening of the hips, Formation of mature ova,Beginning of menstruation, | Female Secondary Sex Characteristics |
| Deepening Voice, Increase in Muscle mass, Broadening of Shoulders, Increase in perspiration | Male Secondary Sex Characteristics |
| released from the the ovary, through the fallopian tube, attach to the uterus and out the vagina as part of the menstrual flow | path of the unfertilized egg |
| the perception a person has of his or her body | Body Image |
| Sperm produced in Testes, passes through the Epididymis, then into the Vas Deferens, and through the Urethra to exit the body | path of the Sperm Cell |
| ovum | human egg cell |
| fertilized ovum | 12-24 hours after ovulation; zygote forms |
| Zygote | the fertilized egg; it enters a 2-week period of rapid cell division and develops into an embryo |
| Clevage | rapid mitotic division right after fertilization |
| Blastocyst | stage of early development in mammals that consists of a hollow ball of cells |
| Gastrulation | In animal development, a series of cell and tissue movements in which the blastula-stage embryo folds inward, producing a three-layered embryo, the gastrula. |
| gastrula | An embryonic stage in animal development encompassing the formation of three layers: ectoderm, mesoderm, and endoderm. |
| implantation occurs | 6 days after fertilization |
| Implantation | process in which the blastocyst attaches to the wall of the uterus |
| Progesterone | A hormone produced by the ovaries which acts with estrogen to bring about the menstrual cycle. |
| Follical Stimulating Hormone (FSH) | -Stimulates production of ovarian follicle and Occurs during the beginning of the cycle |
| ovarian follicles | Areas within the ovary in which individual eggs develop |
| sperm cell | male reproductive cell |
| umbilical cord | a tube containing the blood vessels connecting the fetus and placenta |
| Placenta | A structure that allows an embryo to be nourished with the mother's blood supply |
| Ovary | produces eggs |
| testis | male reproductive organ that produces sperm and hormones |
| fallopian tubes | where fertilization takes place |
| Uterus | A hollow muscular organ in the pelvic cavity of the female, in which the embryo is nourished and develops before birth |
| first trimester of pregnancy | end of third month: |
| 1. fetus about 9 cm long. the baby is attached to the placenta by an umbilical cord and surrounded with a sac filled with fluid. by the end of the first trimester the baby is about 2 inches long and all major internal organs are present. | |
| second trimester of pregnancy | fetus undergoes amount of growth; developing facial features and muscle tissues...brain begins to send signals to control his organs... sucks his thumb and practices breathing by taking in amniotic fluid. at the end of sixth month - fetus measures 30 to 3 |
| third trimester of pregnancy | 7th and 8th month = cont. rapid growth and further brain development 9th month - antibodies transported by highly selective active transport from mom to fetus for protection against foreign matter, in prep outside of womb growth rate slows and fetus becom |
| ovulatory phase | The second stage of the general menstrual cycle, when the ovum is released. |
| The average menstrual cycle takes about 28 days and occurs in phases: | the follicular phase, the ovulatory phase (ovulation), and the luteal phase. |
| follicular phase | the stage in which an immature egg completes its first meiotic division |
| luteal phase | the menstrual stage in which the corpus luteum develops |
| corpus luteum | Endocrine tissue which produces hormones, estrogen, and progesterone which prepares the uterine lining for receiving an embryo |