oogenesis

• What is oogenesis?


  this is the production of the female gametes
• what happens before birth in oogenesis

  cells of the germinal epithelium divide by mitosis to make diploid oogonia and then this will divide by mitosis into primary oocytes
• what is the first step of oogonia

  cells of the germinal epithelium divide by mitosis to make diploid oogonia
• when germinal epithelial cells divide to produce diploid oogonia what else is produced


  more germinal epithelial cells
• what happens to the oogonia in oogenesis

  they under go mitosis many time and enlarge to form primary oocytes
• in what phase of meiosis are primary oocytes arrested

  in prophase 1
• what is ovulation


  this is when the secondary oocyte is released into the oviduct for fertilization
• when will oogenesis progress past the primary oocyte

  when the female goes through puberty
• what happens to the primary oocyte in meiosis 1

  they will start meiosis but stop during prophase 1
• when a baby girl is born what will be happening with their primary oocytes

  they are arrested at prophase 1 in her ovaries
• what is meant by a polar body


  this is a small cell that does nothing
• is there a role of the polar body


  no
• what happens to the polar body

  they degenerate
• after puberty when will each oocyte mature

  every month after puberty before ovulation
• what happens to the primary oocytes that go through ovvulation

  they complete their first meiotic division to form haploid secondary oocyte and a polar body
• what happens to the secondary oocyte after ovulation

  they are released from ovary during ovulation and begin meiosis 11
• what will happen to the ovary after meiosis 11

  oogenesis will stop until fertilization takes place
• what happens to the ovary after fertilization take place

  meiosis 11 complete and a large ovum and a secondary polar body is formed
• what will trigger the completion of meiosis 11

  the entry of sperm
• what else apart from oogonia can germinal epithelial cells divide into

  follicle cells
• what are follicle cells

  these surround the primary oocytes to form primary follicles
• during puberty what stimulates the follicles to develop further

  hormones
• what will follicle cells develop into each month

  mature Graafian follicle
• what will the mature Graafian follicle contain

  a secondary oocyte
• what will happen to the mature Graafian follicle

  it will migrate to the surface of the ovary where it bursts and the secondary oocyte is released
• what is the name of the process when the secondary oocyte is released

  ovulation
• what happens to the Graafian follicle after ovulation

  it will become the corpus luteum
• what is the function of the corpus luteum

  these secrete hormones for pregnancy
• what will happen to the corpus luteum if fertilization doesn't occur

  it will degenerate into the corpus albicans
• What is the corpus albicans?

  degenerated corpus luteum