| A | B |
|---|
| amniocentesis | withdrawl of amniotic fluid from the uterus |
| blastocyst | a hollow sphere of cells that forms very early in fetal development |
| cephalocaudal | head to toe |
| chorionic membrane | outer fetal membrane |
| cotyledons | subdivision of the maternal part of the placenta that supplies nutrients to fetal placental villi |
| ductus arteriosus | joins the pulmonary artery and aorta in fetal life |
| ductus venous | joins umbilical vein and inferioe vena cava in fetal life |
| ectoderm | a layer of primary germ cell tissue |
| embryo | lasts from day 10 to 5-8 weeks |
| expected date of confinement | date on which birth can be predicted to happen |
| fertilization | union of sperm and ovum |
| fetus | 8th week until birth |
| foramen ovale | opening between the atria of the fetal heart |
| hydramnios | excessive amniotic fluid (>2000 ml) |
| nidation | implantation of the zygote to the endometrium |
| lightening | fetal descent in to the pelvis |
| morula | developing blastomere |
| nonstress test | assessment of fetal well being |
| quickening | first fetal movement felt by mother |
| surfactant | secreted by the alveoli cells to reduce surface tension |
| trophoblast | cells in outer ring of blastocyst |
| umbilical cord | composed of 2 veins and 1 artery |
| Wharton's jelly | substance that adds bulk to the umbilical cord |
| yolk sac | the space in embryonic life from which the hemopoietic system develops |
| zygote | a fertilized ovum |
