menstrual cycle

• is when a sperm cell joins with an egg cell. it is important because this is how reproduction occurs

  fertilization
• is the body's way of preparing for pregnancy

  menstrual cycle
• it only happens in females

  menstrual cycle
• menstrual cycle is controlled by chemicals called

  hormones
• several hormones are involved in the menstrual cycle of a woman
• follicle stimulating hormone causes the maturation of the egg cell in the ovary
• leutinizing hormone (LH) stimulates the release of egg cells
• estrogen is involved in repairing and thickening the endometrium or the uterus lining
• progesterone maintains the uterus lining
• menstruation can happen in how many days?

  1 to 7 days
• the uterus lining thickens in what day?

  day 6 to 10
• ovulation usually occurs on what day?

  day 14
• the ovulation period is 11 to 18 days
• uterus lining continues to thicken in day 19 - 28
• follicular phase starts in day 1 and ends in day 14
• the luteal phase occurs in day 15 and ends in day 28
• how many days does the menstrual cycle take?

  28 days
• menstruation is when the uterus lining breaks down