B5- Puberty and the menstrual cycle

Cards (33)

  • What is the main focus of today's video?
    Reproductive hormones and the menstrual cycle
  • What is puberty?
    The period of developing secondary sexual characteristics
  • What triggers the process of puberty?
    Reproductive hormones
  • What hormone is primarily responsible for male puberty?
    Testosterone
  • Where is testosterone produced in men?
    In the testes
  • What hormone is primarily responsible for female puberty?
    Estrogen
  • How many stages are there in the menstrual cycle?
    Four stages
  • Where is estrogen produced in women?
    In the ovaries
  • What is the average length of a menstrual cycle?
    Around 28 days
  • What are the four stages of the menstrual cycle?
    1. Menstruation
    2. Uterus lining buildup
    3. Ovulation
    4. Uterus lining maintenance
  • What does the red line in the menstrual cycle graph represent?
    The thickness of the uterus lining
  • What happens during stage one of the menstrual cycle?
    Menstruation occurs with bleeding
  • How long does menstruation typically last?
    About four days
  • What occurs during stage two of the menstrual cycle?
    The uterus lining builds up again
  • What is the purpose of the thick spongy layer formed in stage two?
    To prepare for a fertilized egg
  • What happens during stage three of the menstrual cycle?
    Ovulation occurs with egg release
  • How long does stage three, ovulation, last?
    One day
  • What occurs in stage four of the menstrual cycle?
    The uterus lining is maintained
  • What happens if no fertilized egg reaches the uterus?
    The uterus lining breaks down
  • What happens if a fertilized egg implants in the uterus?
    The menstrual cycle stops
  • What hormone stimulates the growth of the uterus lining?
    Estrogen
  • What hormone maintains the uterus lining during stage four?
    Progesterone
  • What are the two hormones produced in the ovaries?
    Estrogen and progesterone
  • Where are luteinizing hormone (LH) and follicle stimulating hormone (FSH) produced?
    In the pituitary gland
  • What is the role of follicle stimulating hormone (FSH)?
    To stimulate egg maturation in ovaries
  • What does luteinizing hormone (LH) stimulate?
    The release of the egg during ovulation
  • How do the hormones interact during the menstrual cycle?
    • FSH stimulates ovaries to produce estrogen
    • Estrogen inhibits FSH through negative feedback
    • High estrogen levels stimulate LH release
    • Progesterone inhibits both LH and FSH
  • What is the effect of high estrogen levels on FSH?
    It inhibits FSH production
  • What triggers the LH spike during the menstrual cycle?
    High levels of estrogen
  • What happens if progesterone levels drop?
    The uterus lining breaks down
  • What is the final outcome if a fertilized egg implants into the uterus?
    The menstrual cycle stops
  • What is the role of the pituitary gland in the menstrual cycle?
    It produces LH and FSH hormones
  • How does the menstrual cycle change if pregnancy occurs?
    The cycle stops and does not repeat