PP2.H2.5 Ovarian Follicles 2

Ovarian Follicles 2:

  • Follicles mature, mainly under the influence of hormones released by the pituitary gland
  • Different stages of maturation are described:
    • Primordial
    • Primary
    • Secondary
    • Graafian
  • When a Graafian follicle matures, it ruptures to release its ovum
  • It then undergoes changes to form a corpus luteum; this is the endocrine gland which secretes the hormones of pregnancy and maintains the development of the embryo and placenta
  • Follicles may break down at any stage of their development (most do!)
  • They are then known as atretic follicles
  • Corpora lutea also breakdown and are then known as corpora albicans
  • The naming of follicles is not standardised across all texts
  • It may even vary from one edition of a text to another!