OB Test I
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Where fertilization normally occurs | outer third of fallopian tube, near ovary
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haploid # of chromosomes | in meiosis where # of chromosomes is reduced to half (23 chromosomes) + 1 sex chromosome
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cell formed by union of sperm and ovum, transported through fallopian tube into uterus | zygote
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morula | ball formed by divided cells of zygote
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decidua | endometrium after zygote implantation
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amniotic sac | formed from chorion and amnion, filled with fluid to allow embryo to float freely
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3 germ layers of embyro | ectoderm, mesoderm, endoderm
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3 fetal circulatory shunts | ductus venosus, foramen ovale, ductus arteriosus
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fetal circ. shunt that diverts blood away from liver as it returns from placenta | ductus venosus
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fetal circ. shunt that diverts most blood from R atrium to L atrium | foramen ovale
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fetal circ. shunt that diverts blood from pulmonary artery to lungs | ductus arteriosus
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when does the foramen ovale close (temporarily) | 2 hours after birth
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when does the ductus arteriosus shunt close | 15 hours after birth
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when does the ductus venosus shunt close functionally AND permanently | when cord is cut, permanently in about 1 week
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monozygotic | identical twins
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dizygotic | fraternal twins
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gravida | any pregnancy, regardless of duration, also # of pregnancies
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nulligravida | woman who has never been pregnant
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primigravida | woman who is pregnant for first time
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multigravida | woman who has been preg before, regardless of duration of pregnancy
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para | woman who has given birth to 1+ children who reached 20+ weeks gestation regardless of whether child still living
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primipara | woman who has given birth to her first child past point of viability regardless of whether the child was alive at birth or now living
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multipara | woman who has given birth to 2+ children past viability
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nullipara | woman who has NOT given birth to a child who reached point of viability
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