Endocrine System (Hormones) - exam practice
Endocrine System (Hormones)
Question 1 of 4
Hormones can be used to control fertility.
Explain how hormones can be used by women for contraception.
Which of these statements about the birth control pill are correct?
The pill does not protect against sexually transmitted infections (STIs).
State what type of contraceptive must be used to avoid STIs.
The hypothalamus, pituitary gland and ovaries work together to regulate the menstrual cycle.
The graph below shows how the concentrations of four hormones change throughout the menstrual cycle.
Name hormones A, B, C and D.
Ovulation occurs on day 14 of this 28 day cycle.
Name two hormones that peak immediately before ovulation.
The lining of the uterus thickens between days 7 and 27 of the menstrual cycle.
Which hormone is responsible for the thickening of the uterus lining?
State the purpose of the thickening of the uterus lining.
One type of contraceptive pill keeps the level of progesterone high for most of the cycle.
Suggest how it works.
Hormones are used in some forms of contraception.
- The contraceptive pill needs to be taken every day for 21 out of 28 days.
- The contraceptive implant is put under the woman's skin during an operation, and lasts for up to 5 years.
Which of the two methods is likely to be the most reliable in preventing pregnancy?
Give one advantage of using this implant rather than taking contraceptive pills.
Give one disadvantage of using the implant rather than taking contraceptive pills.
Explain how a contraceptive pill works.
Contraception is used by couples who do not want to have a baby.
Explain how different methods of contraception prevent pregnancy.