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Stack #4065209
Ch 23 1st Trimester
| Answer | Question |
|---|---|
| abortion | the complete expulsion or partial expulsion of the conceptus |
| adnexal ring sign | the sonographic sign that describes the appearance of an ectopic pregnancy within the fallopian tube; may be referred to as the tubal ring sign, bagel sign, or blob sign |
| amnion | the wall of the inner sac (amniotic cavity) that contains the embryo and amniotic fluid; echogenic curvilinear structure that may be seen during the first trimester within the gestational sac |
| amniotic cavity | the cavity that contains simple |
| ampulla (fallopian tube) | the longest and most tortuous segment of the fallopian tube; area of the tube in which fertilization takes place and a common location for ectopic pregnancies to implant |
| anembryonic gestation | an abnormal pregnancy in which there is no evidence of a fetal pole or yolk sac within the gestational sac; also referred to as a blighted ovum |
| aneuploid | a condition of having an abnormal number of chromosomes |
| blastocyst | the stage of the conceptus that implants within the decidualized endometrium |
| blighted ovum | see key term anembryonic gestation |
| bradycardia | a low heart rate |
| choriocarcinoma | the most malignant form of gestational trophoblastic disease with possible metastasis to the liver, lungs, and vagina |
| chorion | the outer membrane of a gestation that surrounds the amnion and the developing embryo |
| chorion frondosum | the part of the chorion, covered by chorionic villi, that is the fetal contribution of the placenta |
| chorionic cavity | the space between the chorionic sac and the amniotic sac that contains the secondary yolk sac; also referred to as the extraembryonic coelom |
| chorionic sac | the gestational sac; also see key term chorion |
| chorionic villi | fingerlike projections of gestational tissue that attach to the decidualized endometrium and allow the transfer of nutrients from the mother to the fetus |
| choroid plexus | specialized cells within the ventricular system responsible for cerebrospinal fluid production |
| conception | the combination of a female ovum with a male sperm to produce a zygote; also referred to as fertilization |
| corpus luteum cyst | physiologic ovarian cyst that develops after ovulation has occurred |
| corpus luteum of pregnancy | the corpus luteum that is maintained during an early pregnancy for the purpose of producing estrogen and primarily progesterone |
| crown rump length | the measurement of the embryo/fetus from the top of the head to the rump |
| decidua basalis | the endometrial tissue at the implantation site, and the maternal contribution of the placenta |
| decidual reaction | the physiologic effect on the endometrium in the presence of a pregnancy |
| discriminatory zone | the level of human chorionic gonadotropin beyond which an intrauterine pregnancy is consistently visible |
| double decidual sign | the normal sonographic appearance of the decidua capsularis and decidua parietalis, separated by the anechoic fluid |
| double sac sign | see key term double decidual sign |
| eclampsia | a sequela of preeclampsia in which uncontrollable maternal hypertension and proteinuria lead to maternal convulsions and, possibly, fetal and maternal death |
| ectopic pregnancy | a pregnancy located outside the endometrial cavity of the uterus |
| embryo | term given to the developing fetus before 10 weeks' gestation |
| embryonic demise | the death of an embryo before 10 weeks' gestation |
| extraembryonic coelom | see key term chorionic cavity |
| falx cerebri | a double fold of dura mater located within midline of the brain |
| fimbria | the fingerlike extension of the fallopian tube located on the infundibulum |
| focal myometrial contraction | localized, painless contractions of the myometrium in the gravid uterus that should resolve within 20 to 30 minutes |
| gestational age | the way in which a pregnancy can be dated based on the first day of the last menstrual cycle; also referred to as menstrual age |
| gestational trophoblastic disease | a disease associated with an abnormal proliferation of the trophoblastic cells during pregnancy; may also be referred to as a molar pregnancy |
| Graafian follicle | the name for the dominant follicle before ovulation |
| hematocrit | the laboratory value that indicates the amount of red blood cells in blood |
| hematopoiesis | the development of blood cells |
| heterotopic pregnancy | coexisting ectopic and intrauterine pregnancies |
| human chorionic gonadotropin | hormone produced by the trophoblastic cells of the early placenta; may also be used as a tumor marker in nongravid patients and males |
| hydatidiform mole | the most common form of gestational trophoblastic disease in which there is excessive growth of the placenta and high levels of human chorionic gonadotropin; typically benign |
| hyperemesis gravidarum | excessive vomiting during pregnancy |
| idiopathic | from an unknown origin |
| implantation bleeding | a bleed that occurs at the time in which the conceptus implants into the decidualized endometrium |
| infundibulum | the distal segment of the fallopian tube |
| intradecidual sign | the appearance of a small gestational sac in the uterine cavity surrounded by the thickened, echogenic endometrium |
| intrauterine contraceptive device | a reversible form of contraception that is manually placed in the uterine cavity to prevent pregnancy; also referred to as an intrauterine device |
| invasive mole | a type of gestational trophoblastic disease in which a molar pregnancy invades into the myometrium and may also invade through the uterine wall and into the peritoneum |
| limb buds | early embryonic structures that will eventually give rise to the extremities |
| mean sac diameter | the measurement of the gestational sac to obtain a gestational age; achieved by adding the measurements of the length, width, and height of the gestational sac and dividing by 3 |
| menstrual age | see key term gestational age |
| methotrexate | a chemotherapy drug used to attack rapidly dividing cells like those seen in an early pregnancy; this drug is often used to manage ectopic pregnancies |
| miscarriage | the spontaneous end of a pregnancy before viability |
| missed abortion | fetal demise with a retained fetus |
| Morison pouch | the space between the liver and right kidney; also referred to as the right subhepatic space or hepatorenal space |
| morula | the developmental stage of the conceptus following the zygote |
| multiloculated | having more than one internal cavity |
| multiparity | having birthed more than one child |
| nuchal translucency | the anechoic space along the posterior aspect of the fetal neck |
| pelvic inflammatory disease | infection of the female genital tract that may involve the ovaries, uterus, and/or the fallopian tubes |
| physiologic bowel herniation | the normal developmental stage when the midgut migrates into the base of the umbilical cord |
| preeclampsia | pregnancy |
| pseudogestational sac | the appearance of an abnormally shaped false gestational sac within the uterine cavity as a result of an ectopic pregnancy; this often corresponds with the accumulation of blood and secretions within the uterine cavity |
| rhombencephalon | the primary brain vesicle also referred to as the hindbrain; becomes the cerebellum, pons, medulla oblongata, and fourth ventricle |
| secondary yolk sac | the structure responsible for early nutrient transfer to the embryo; the yolk sac seen during a sonographic examination of the early gestation |
| subchorionic hemorrhage | a bleed between the endometrium and the gestational sac at the edge of the placenta |
| triploid | having three sets of each chromosome or 69 total |
| trisomy 18 | chromosomal aberration in which there is a third chromosome 18; also referred to as Edwards syndrome |
| trisomy 21 | chromosomal aberration in which there is a third chromosome 21; also referred to as Down syndrome |
| trophoblastic cells | the cells that surround the gestation that produce human chorionic gonadotropin |
| Turner syndrome | a chromosomal aberration where one sex chromosome is absent; may also be referred to as monosomy X |
| uterine leiomyoma | a benign, smooth muscle tumor of the uterus; may also be referred to as a fibroid or uterine myoma |
| vitelline duct | the structure that connects the developing embryo to the secondary yolk sac |
| zygote | the cell formed by the union of two gametes; the first stage of a fertilized ovum |
Created by:
thewizardpendragon
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