hormones Flashcards
<p>Keyword</p>
<p>Definition/Fact</p>
<p>Hormones</p>
<p>Chemical messangers which travel in the blood to activate target cells. Travel in the blood, slower than nerves</p>
<p>Pituitary Gland</p>
<p>Produces FSH and LH which are involved in the menstrual cycle. Produced in the brain</p>
<p>Ovaries</p>
<p>Produce oestrogen which involved in the mestrual cycle</p>
<p>Menstrual Cycle</p>
<p>The monthly release of an egg from a women's ovaries</p>
<p>FSH</p>
<p>Produced in Pituitary gland, causes and egg to mature in one of the ovaries, stimulates the ovaries to produce oestrogen</p>
<p>Oestrogen</p>
<p>Produced in ovaries,causes pituitart to produce LH. Inhibits release of FSH</p>
<p>LH</p>
<p>Produced by pituitary gland. Stimulates the release of an egg at around the middle of the menstrual cycle</p>
<p>Stage 1</p>
<p>When bleeding starts. The uterus lining breaks down for about 4 days</p>
<p>Stage 2</p>
<p>The lining of the uterus builds up again from day 4 to 14 into a thick spongy layer of blood vessels, ready to receive a fertilised egg</p>
<p>Stage 3</p>
<p>An egg is released from the ovary at day 14</p>
<p>Stage 4</p>
<p>The wall is then maintained fro about 14 days intil day 28. If no fertilised egg has landed on the uterus wall by day 28 the lining starts to breaks down and the whole cycle starts again</p>