Lecture 2 Flashcards
Describe the structure of the cervix
Cervical canal surrounded by single/multiple folds
Function of the cervix
- Transport sperm
- Isolate uterus during pregnancy
- Cervical mucus
What is the structure of uterine tissue (3)
- Perimetrium
- Myometrium
- Endometrium
Function of uterine tissue (5)
- Sperm transport
- Luteolysis
- Environment for embryo implantation
- Contributes to maternal placenta
- Expulsion of foetus at birth
Structure of the Oviduct (3)
- Infundibulum
- Ampulla (fertilisation)
- Isthmus
Function of the Oviduct (4)
- Gamete transport to site of fertilisation
- Temporary sperm storage
- Facilitate sperm capacitation
- Support for pre-implantated embryo
The ovary: what do follicles produce
- Oocytes
- Hormones
The ovary: what do corpus luteum produce
- Progesterone
Name the 2 stages of follicle development
- preanatal: primordial, primary and secondary follicles
2. antral: tertiary and preovulatory follicles
What is the longest stage of follicle development
Preantral phase
What is the intermediate stage of follicle development
Antral phase
What is the shortest stage of follicle development
Preovulatory phase
What is formed in the transition from preantral to antral
Follicular antrum
What is follicle development characterised by (3)
recruitment, selection and dominance
Define recruitment
a cohort of small antral follicles start to develop and secrete small amounts of oestradiol
Define selection
some recruitment follicles either degenerate or are chosen to grow and secrete moderate amounts of oestradiol
Define dominance
selected follicles that do not degenerate become dominant and secrete large amounts of oestradiol
What is the main hormone that the follicle produces
Oestradiol
What does the outer cortex contain
Follicles and CL
What happens to Oogonia
Enter meiosis and arrest at prophase I and become primary oocytes
What does the transition from primordial to prenatal form
Zona pellucida
Where are the receptors on the LH
Theca interna
Where are the receptors on the FSH
Granulosa cells
What is the future of the primordial germ cells
Spermatogonial or oogonial stem cells
