Biology of controlling fertility (2.3)

Question 1

When are males fertile and why?

Answer 1

Males are always fertile; they have a constant level of pituitary hormones. Resulting in a steady concentration of testosterone and sperm being produced.

Question 2

When are females fertile and why is this?

Answer 2

Female fertility is a cycle, with the fertile period being 1-2 days following ovulation.

Question 3

What can be used to measure a females fertile period?

Answer 3

Indicators such as temperature after ovulation; change in cervical mucus; hormone levels.

Question 4

How can a woman be infertile due to hormones?

Answer 4

Failure to produce enough FSH or LH can cause fertility issues.

Question 5

How can a woman who is failing to ovulate be treated?

Answer 5

Ovulation can be stimulated by drugs; that contain hormones that can replicate FSH and LH; Drugs that prevent the negative feedback effect of oestrogen on FSH secretion.