Question

slide #169
once an egg is fertilized, where does it need to \implant\ to continue to grow?
○ uterus
○ fallopian tube
○ one of the ovaries
○ cervix

question 18
0.5 pts
slide #180
why can a missed period (menstruation) be the first sign of pregnancy?
○ during pregnancy, the menstrual cycle continues as normal.
○ the missed period means that hcg levels are low and conception has occurred.
○ the uterus needs the tissue lining to nourish the growing baby, so it doesnt shed the endometrium.
○ the missed period is a symptom of stress caused by the new pregnancy.

Explanation:

For the first question:

• The uterus is the site where a fertilized egg (zygote) implants. The fallopian tube is where fertilization occurs. The ovaries produce eggs. The cervix is the lower part of the uterus that opens into the vagina.

For the second question:

• During pregnancy, the endometrium (tissue lining of the uterus) is retained to nourish the growing embryo/fetus. So, the uterus doesn't shed the endometrium (which is what causes menstruation). If HCG levels were low, pregnancy would likely not be maintained. Stress - related missed periods are not the reason for a missed period in pregnancy. And during pregnancy, the menstrual cycle does not continue as normal.

Answer:

Slide #169: uterus
Question 18: The uterus needs the tissue lining to nourish the growing baby, so it doesn't shed the endometrium.