Which statement is true of the ovulation phase?

a. Progesterone levels are below normal.
b. Body temperature is below baseline levels.
c. Body temperature is at previous baseline levels or higher.
d. Intense body heat and sweating occur.


C
Progesterone levels rise and fall cyclically during the menstrual cycle. When progesterone levels are low, the body temperature is a few tenths of a degree below the baseline. The lower temperature persists until ovulation occurs. During ovulation, greater amounts of progesterone enter the circulatory system and raise the body temperature to previous baseline levels or higher. These temperature variations help to predict a woman's most fertile time to achieve pregnancy. Women who undergo menopause (cessation of menstruation) often experience periods of intense body heat and sweating lasting from 30 seconds to 5 minutes (hot flashes).

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Identify the FDA pregnancy category of barbiturates.

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