Female reproductive system - graffian follicle, Biology

GRAFFIAN FOLLICLE -

  1. It appears as knob or stigma in medulla. It is round, discovered by Graff.
  2. It is covered by 2 layers - thecae externa & theca interna.
  3. From theca interna estrogen is secreted to control secondary sexual charaters in female.
  4. Inside theca interna, membrana granulosa is present.
  5. Secondary oocyte is attached to covering layer by group of cells i.e. discus proligerous.
  6. The point of discus proligerous close to secondary oocyte is Hill of follicular cells or cumulus oophorus.
  7. Secondary oocyte is covered by zona pellucida (primary egg membrane) and corona radiata (secondary egg memebrane).
  8. Cavity of follicle is antrum of Himor or follicular cavity filled with follicular fluid.
  9. Graffian's follicle is reptured, secondary oocyte come out of ovary from stigma point first in coelome. It is ovulation.
  10. This time L.H. is secreted more.
  11. After rapturing rest part of graffian's follicle which is yellow coloured is known as corpus luteum.
  12. It consists of clotting, fibrin, lutein cells. L.H. is helpful in formation of corpus luteum.
  13. Corpus luteum secretes progesteron & relaxin.
  14. Progesteron is helpful in implantation, to stop ovulation during gestation period.
  15. Relaxin is helpful to relax pelvic muscles during parturition.
  16. If fertilisation occurs then corpus luteum varium is used.
  17. If not then corpus luteum sporerum is used.
  18. After formation of placenta, corpus luteum is degenerated and converted into white scar corpus albicanse.
Posted Date: 10/3/2012 5:39:00 AM | Location : United States







Related Discussions:- Female reproductive system - graffian follicle, Assignment Help, Ask Question on Female reproductive system - graffian follicle, Get Answer, Expert's Help, Female reproductive system - graffian follicle Discussions

Write discussion on Female reproductive system - graffian follicle
Your posts are moderated
Related Questions
Signify the term - Pectoral girdle. Bones in vertebrates that connect the appendages on the left and right side of the anterior appendicular skeleton to each other. Pectoral gi

How do the ideas of energy and chemical cycles, community structure, biodiversity and succession fit together to form the basis of the way the natural world works?


SPECIAL FEATURES

The overall goal of BCC programs for diabetes mellitus is to promote behaviors that control diabetes mellitus and prevent complications. These include: Following treatment

Q. Is monoculture a system that contributes to great biological diversity of an ecosystem? The Monoculture implies that in a large area a single crop (only one species of plant

1 list the names of the phyla of animalike protists that have only free-living members

The plasma membrane consists mainly of: 1. Phospholipids embedded in a protein bilayer 2. Proteins embedded in a phospholipid bilayer 3. Proteins embedded in a polymer of

T r ad i tional Uses of dung Dung has an astonishing and myriad variety of uses which have been developed over a period of time. Dung patties ( gootee ) are mainly used by

Types of Cambium On the basis of the arrangement of the Fusiform cells as seen in tangential section, cambium is divided into: A) Storied/Stratified Cambium : The groups o