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33 Cards in this Set
- Front
- Back
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sperm |
the male reproductive cells
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eggs |
the female reproductive cells |
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testis |
is the male reproductive organ that produces sperm |
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semen |
this mixture of sperm and fluids |
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penis |
a tubelike structure that delivers sperm to the female reproductive system |
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ovary |
an organ where oocytes are stored and mature |
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vagina |
the part of the female reproductive system that connects the uterus to the outside of the body |
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menstrual cycle |
when the ovaries and the uterus go through reproductive-related changes
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ovulation |
a phase in which hormones cause an egg to be released from the ovary |
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fertilization |
when the egg joins with a sperm |
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zygote |
a fertilized egg |
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pregnancy |
the period of development from fertilized egg to birth |
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placenta |
the outer cells of the zygote and cells from the uterus |
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umbilical cord |
the outer zygote cells form this rope-like structure which attaches the developing offspring to the placenta |
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embryo |
what the zygote is called from the time of attachment to the uterus until the end of the eighth week of pregnancy |
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fetus |
what the developing offspring is called during the time between nine weeks and birth |
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cervix |
a small structure between the uterus and the vagina |
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puberty |
the period during which adolescents reach sexual maturity and become capable of reproduction
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blastocyst |
a mammalian blastula in which some differentiation of cells has occured |
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corpus luteum |
a hormone-secreting structure that develops in an ovary after an ovum has been discharged but degenerates after a few days unless pregnancy has begun |
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endocrine glands |
are glands of the endocrine system that secrete their products, hormones, directly into blood rather than through duct |
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epididymis |
a highly convoluted duct behind the testis, along which sperm passes to the vas deferens |
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gastrulation |
a phase early in the embryonic development of most animals during which the single-layered blastula is reorganized into a trilaminar structure known as the gastrula. These layers are known as the ectoderm, mesoderm and the endoderm |
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hormone |
a regulatory substance produced in an organism and transported in tissue fluids as blood or sap to stimulate specific cells or tissues into action |
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implantation |
the attachment of the fertilized egg or blastocyst to the wall of the uterus at the start of pregnancy |
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menstruation |
the process in a woman of discharging blood and other materials from the lining of the uterus at intervals of about one lunar month from puberty until menopause |
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neurulation |
the folding process in vertebrate embryos which includes the transformation of the neural plate into the neural tube |
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parathyroid hormone |
a gland next to the thyroid that secretes a hormone that regulates calcium levels in a person's body |
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pituitary gland |
the major endocrine gland that controlls growth and development and the functioning of the other endocrine glands |
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scrotum |
a pouch of skin containing the testicles |
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seminiferous tubule |
any of the coiled threadlike tubules that make up the bulk of the testis and are lined with a layer of epithelial cells from which the spermatozoa are produced |
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sexually transmitted disease |
diseases or infections that can be transmitted by directs sexual contact |
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vas deferens |
the duct that conveys sperm from the testicle to the urethra |
