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6.6 fert and gest

QuestionAnswer
Outline the process of In Vitro Fertilization -Stop menstrual cycle -Hormone injections to stimulate superovulation (FSH and LH) -Extract eggs -Sperm injected into egg -Fertilization occurs in vitro -Embryo development -Implantation of embryos into uterus
Discuss advantages and disadvantages (ethical issues) to In Vitro fertilization -genetic screening -frozen -stem cell research -eugenics -higher pregnancy and birth risks -right to life concerns -cultural and religious objections
Discuss William Harvey’s experimentation of sexual reproduction in deer -dissected female deer during mating season to prove embryos are found immediately after mating -was able to disprove Aristotle's theory on embryo formation
Describe the process of fertilization -sperm has acrosome reaction -egg does cortical reaction -enzymes destroy sperm-binding proteins to prevent polyspermy -secondary oocyte completes meiosis II -egg and sperm nuclei fuse forming zygote
State the reaction that avoids how polyspermy cortical reaction
Outline the role of HCG in early pregnancy hCG is secreted by implanted embryo: -maintains corpus luteum -progesterone produced -endometrial lining of uterus stays
Outline development of the early embryo up until implantation -undergoes mitosis -solid ball of cells (morula) -develops into hollow ball of cells (blastocyst) -implants in endometrium of uterus
Explain the structure, function, and hormonal role of the placenta Structure: disc-shaped organ attached to uterine wall Functions: -exchanges nutrients and waste between mom and baby -produces Progesterone and Estrogen (endometrial lining, uterine contractions) (uterine muscles, mammary glands)
Describe the purpose of the amniotic sac -support and protection for fetus -amniotic fluid absorbs pressure for protection -creates buoyancy -prevents tissue dehydration -barrier against infection
Describe the correlation between mass of the mother and gestation positive correlation
Outline the role of hormones during childbirth -Fetus releases prostaglandins and pituitary releases Oxytocin -Both cause contractions Oxytocin stimulates uterus to contract and inhibits progesterone production
Discuss the effects of synthetic estrogen on the environment used in birth control pills and excreted out -Large concentrations in wastewater -Fish becoming more feminized -Males decreasing sperm count
Created by: luciepike
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