hormones

• What is the main event that characterizes puberty?

  Development of secondary sexual characteristics
• Which hormone primarily triggers the development of secondary sexual characteristics in males?

  Testosterone
• Where is testosterone produced in males?

  Testes
• Besides developing secondary sexual characteristics, what else does testosterone stimulate in males?

  Sperm production
• Which hormone primarily triggers the development of secondary sexual characteristics in females?

  Estrogen
• Where is estrogen produced in females?

  Ovaries
• How many hormones interact to bring about the stages of the menstrual cycle?

  Four
• What is the name of the female reproductive organ in the center of the female reproductive system?

  Uterus
• What is the name of the tissue that surrounds the uterus?

  Uterus lining
• Which structures are connected to the uterus by the fallopian tubes?

  Ovaries
• Where are eggs stored in the female reproductive system?

  Inside the ovaries
• Where are eggs transported to after ovulation?

  Along one of the fallopian tubes
• What happens to the egg if it is fertilized during its journey to the uterus?

  It implants into the uterus lining
• What happens to the egg if it is not fertilized during its journey to the uterus?

  It breaks down and passes out
• What tissue are we referring to when we talk about the uterus lining building up or breaking down during the menstrual cycle?

  Tissue in the uterus lining
• What is the average length of a menstrual cycle?

  Around 28 days
• In menstrual cycle graphs, what does the red area typically represent?

  The uterus lining
• What is the name of the first stage of the menstrual cycle?

  Menstruation
• In menstrual cycle graphs, what does the y-axis tell us about the uterus wall?

  Its thickness
• What occurs during menstruation?

  Breakdown of the uterus lining
• How long does menstruation typically last?

  About four days
• What happens to the uterus lining during the second stage of the menstrual cycle?

  It starts to build up again
• What is the structure of the uterus lining as it builds up during the second stage?

  A thick, spongy layer with blood vessels
• How long does the second stage of the menstrual cycle last?

  Around ten days
• What is the role of the built-up uterus lining during the second stage?

  Prepare for a fertilized egg
• What takes place during stage three of the menstrual cycle?

  Ovulation
• What event characterizes ovulation?

  Egg being released from an ovary
• How long does stage three of the menstrual cycle last?

  A single day
• What occurs during stage four of the menstrual cycle?

  Maintaining the lining of the uterus
• How long does stage four of the menstrual cycle last?

  All the way to day 28
• What happens to the uterus lining at the end of the menstrual cycle if no fertilized egg has arrived?

  It starts to break down
• What happens after the uterus lining breaks down at the end of the cycle?

  The cycle repeats
• What happens if a fertilized egg implants into the uterus lining?

  The menstrual cycle stops
• What develops from the fertilized egg after it implants in the uterus lining?

  A fetus
• Which hormone is produced in the ovaries and stimulates the uterus lining to grow?

  Estrogen
• During which stage of the menstrual cycle do estrogen levels increase significantly?

  Stage two
• Which hormone is produced in the ovaries and maintains the lining of the uterus?

  Progesterone
• What happens when progesterone levels drop during the menstrual cycle?

  The uterus lining breaks down
• Which gland produces luteinizing hormone (LH) and follicle-stimulating hormone (FSH)?

  Pituitary gland
• Where is the pituitary gland located?

  Behind your eyes near your brain