Chapter 3, 4, 5 Leifer VERIFIED

Chapter 3, 4, 5 Leifer VERIFIED What is the total number of chromosomes contained in a mature sperm or ovum? - ANS B. 23 A pregnant woman states, "My husband hopes I will give him a boy because we have three girls." What will the nurse explain to this woman? - ANS D. If a sperm carrying a Y chromosome fertilizes an ovum, then a boy is produced. What is the most common site for fertilization? - ANS B. Outer third of the fallopian tube near the ovary The embryo is termed a fetus at which stage if prenatal development? - ANS C. 9 weeks The nurse is reviewing fetal circulation with a pregnant patient and explains that blood circulates through the placenta to the fetus. What vessel(s) carry blood to the fetus? - ANS A. One umbilical vein Where is the usual location for implantation of the zygote? - ANS A. Upper section of the posterior uterine wall