Question

State how birth control pills work to provide contraception.

a) They prevent fertilization by thickening cervical mucus
b) They inhibit ovulation and alter the uterine lining
c) They physically block sperm from entering the uterus
d) They work by sterilizing the individual

Answer 1

Birth control pills work by inhibiting ovulation, altering the uterine lining, and changing cervical mucus to prevent pregnancy.

Step-by-step explanation:

Birth control pills work by preventing pregnancy through the inhibition of ovulation and alteration of the uterine lining. They contain estrogen and progesterone, which maintain a constant hormone level in the body. This negative feedback system suppresses the release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH), preventing the maturation of follicles and the release of an egg. Additionally, birth control pills change the cervical mucus, making it more difficult for sperm to enter the uterus and fertilize an egg.