Hormones & Menstrual Cycle

B5f

OBJECTIVESKey Objective• Describe the link between hormones & the menstrual cycle

Outcomes• Describe the main stages of the menstrual cycle and the reasons for

such changes (D)• Describe treatments for infertility to include: artificial insemination,

use of FSH, ‘in vitro’ fertilisation (IVF), egg donation, surrogacy, ovary transplants (C)

• Understand the control of the menstrual cycle by the hormones oestrogen, progesterone, FSH and LH (B)

• Discuss the arguments for and against such infertility treatments (A)• Discuss the ethical issues raised by foetal screening (A*)

STARTER

Your Task(s) …

• In your groups of 4, you are going to work as 2 pairs to complete the following tasks;– Pair 1: Work through and complete the tasks on

slides 5-7 (slides 8-10 are there to help if needed)– Pair 2: Work through and complete the tasks on

slide 11 (slide 12 provides more information)• These need to be finished and either handed

to me or e-mailed to me by the end of the lesson.

Grade DUse the internet and videos from websites such as the following

to answer the questions:msnbc.com/news/wld/graphics/menstrual_cycle_dw2.swf

Explain the following words:• Menstruation • Ovulation • Pregnancy Draw a timeline of events in the average menstrual cycle.• Label it with:• i The correct number of days• ii When ovulation starts and ends• iii When menstruation starts and ends

Keywords

Research and explain the following terms, including information on where they are produced and their function;• FSH• LH• OESTROGEN• PROGESTERONE

Task (Grade B)

• Research how hormones (FSH, LH, oestrogen and progesterone) control the menstrual cycle.

• Explain that the role of the pituitary gland and the ovary.

• Link any physical changes to hormonal changes and stages in the menstrual cycle.

• Produce a summary document/slide showing a labelled diagram on the menstrual cycle.

Task (Grade C-A*)

• Outline, briefly, the different fertility treatments that are currently available (C)

• As a group summarise the advantages and disadvantages of two of the treatments on the following slide (A)

• Summarise the ethical issues surrounding foetal screening (A*)

Infertility TreatmentsArtificial insemination • Possibility of blocked oviducts• Sperm donated• Sperm placed in oviductsInjections of FSH• The ovaries may not release eggs• FSH is a hormone• This follicle stimulating hormone is injected into a womanIVF• Various causes• An expensive treatment• The world’s first baby produced from IVF was Louise Brown• Egg and sperm are fertilised outside the body and then replaced into the uterusSurrogacy• A fertilised egg is put into a surrogate woman who is then pregnant• At birth the baby is given to the infertile womanOvary transplants• The first successful ovary transplant was carried out in 2004• The transplant used the woman’s own ovary tissue taken before she had treatment for cancerEgg donation• Ovaries stop producing eggs at an early stage• Eggs are donated from another woman, fertilised by sperm and then placed into the uterus

PLENARY