The Blastocyst Implants in the Uterus on About the ________

question 23

Multiple Choice

The blastocyst implants in the uterus on about the ________ day of the 28 day menstrual cycle.At this time,the endometrium is ________ and progesterone levels are _______.

• A)21st; thick and secretory; high
• B)28th; thick and secretory; low
• C)14th; thick and secretory; low
• D)7th; thin and proliferating; high
• E)1st; thin and proliferating; low

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Definitions:

Miscarriage

The natural termination of a pregnancy before the fetus is viable outside the womb, usually occurring before 20 weeks of gestation.

Gestational Age

The age of an embryo or fetus (or newborn) calculated from the number of weeks that have elapsed since the first day of the last menstrual period of the pregnant woman.

Chorionic Villus Sampling

A prenatal test involving sampling of the placental tissue to test for chromosomal abnormalities in the fetus.

Behavioral Genetics

The study of how genetic and environmental factors affect behavioral traits.