lab M6 L19

Question 1

ovarian cycle

Answer 1

predictable changes in female’s oocytes and ovarian follicles that can be correlated with menstrual cycle

Question 2

what two processes does the ovarian cycle include?

Answer 2

oogenesis (production of female gametes)

folliculogenesis (growth and development of ovarian follicles)

Question 3

oogenesis steps

Answer 3

1. oogonium (ovarian stem cell) divides via mitosis and makes two identical primary oocytes (2n)
2. initiation of ovulation releases oocyte from ovary and LH hormone has been released to initiate meiosis; meiosis makes one secondary oocyte and one first polar body
3. secondary oocyte undergoes meiosis to make one mature ovum and one second polar body; only happens if sperm succeeds in penetrating barriers

Question 4

what are ovarian follicles?

Answer 4

oocytes and their supporting cells

Question 5

folliculogenesis

Answer 5

growth and development of ovarian follicles, which typically leads to ovulation of one follicle

Question 6

folliculogenesis steps

Answer 6

1. primordial follicles present in newborn females
2. puberty occurs and primordial follicles gradually become growing follicles called primary follicles
3. granulose layer divides and primary become secondary follicles
4. tertiary follicles have fully formed antrum and are larger