corpus luteum Structuure that forms the tissue of a ruptured ovarian follicle and secretes female hormones
epididymis an elongated organ on the posterior surface of a testis that constitutes the convoluted beginning of the vas deferens.
gonad A sex cell producing organ
meiosis A form of cell division that halves the genetic material resulting in egg and sperm cells
oocyte An immature egg cell
ovary The primary reprodutive organ of a female
placenta Structure attaching a fetus to the uterine wall providing a conduit to recieve nutrients and excrete wastes.
scrotum Apouch of skin that encloses the testes.
seminiferous tubule Tubule within the testes where sperm cells form
testis Primary reproductive organ of a male
vulva The external reproductive parts of the female that surround the opening of the vagina
blastocyst An early stage of prenatal developement that consists of a hollow ball of cells
embryo A prenatal stage of development after germ layers form but before the rudiments of all organs are present
fetus A human embryo after eight weeks of development
implantation The embedding of a cleavage embryo in the lining of the uterus
lactation Production of milk by the mammary glands
umbilical cord Cordlike structure that connects the fetus to the placenta
yolk sac An extraembryonic membrane connected to the embryo by a long narrow tube
zygote Cell produced by the fusion of an egg and sperm
ultrasound a diagnostic examination
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