Exam 4: Conception and Fetal Development

The fetus is wrinkled,is covered with vernix,opens and closes eyelids,and has physiologically immature lungs that would sufficiently provide gas exchange.What gestational age is this fetus?

During a prenatal examination,a client asks,"How does my baby get air?" The nurse would give correct information by saying:

The nurse is prsenting information on pregnancy and fetal development.To evaluate learing,the nurse asks the students: "When a female reaches adolescence,the ova continue to divide.How many chromosomes do the resulting cells then have?"

The placenta produces hormones that are vital to the function of the fetus.Which hormone is primarily responsible for the maintenance of pregnancy past the eleventh week?

The cell division process that results in two identical cells,each with the same number of chromosomes as the original cell,is called:

The process of implantation is characterized by which of following processes? Select all that apply.

A client tells you that her mother was a twin,two of her sisters have twins,and several cousins either are twins or gave birth to twins.The client,too,is expecting twins.Because there is a genetic predisposition to twins in her family,there is a good chance that the cleint will have:

Which of the following facilitates movement of the ovum through the fallopian tube and toward the uterus?

In evaluating information taught about conception and fetal development,the client verbalizes understanding about transportation time of the zygote through the fallopian tube and into the cavity of the uterus with which statement?

At her first prenatal visit,a woman and the nurse are discussing fetal development.The client asks,"When will my baby actually have a heartbeat?" The nurse should reply,"The heartbeat of an embryo is distinguishable by week number _____ of development."

Which of the following would be typical of a fetus at 20 weeks? Select all that apply.

If only a small volume of sperm is discharged into the vagina,an insufficient amount of enzymes might be released when they encounter the ovum.In that case,pregnancy would probably not result,because:

A woman is seven months pregnant,and has come to the obstetrical clinic for a routine prenatal examination.During the assessment,the nurse hears a soft blowing sound above the mother's symphysis pubis.The rate of sound is synchronous with the mother's heartbeat.The nurse identifies this as:

For fertilization to occur,what portion of the sperm must enter the ovum?

Prenatal influences on the intrauterine environment include which of the following? Select all that apply.