Hormonal control of reproduction Flashcards
Where are hormones released by at puberty?
The pituitary gland
what hormones are released?
- Follicle stimulating hormone
- Luteinising hormone
- Interstitial cell stimulating hormone
How is puberty triggered?
A releaser hormone is produced in the hypothalamus which stimulates the release of hormones by the pituitary gland to trigger the onset of puberty.
What does FSH do?
promotes sperm production
What does ICSH do?
Stimulates the production of testosterone
What does testosterone do?
Promotes sperm production and activates the prostate gland and seminal vesicles.
How long does the menstrual cycle take?
28 days
What are the three phases of the menstrual cycle?
- The follicular phase
- the luteal phase
- the menstrual phase
What does FSH (follicle stimulating hormone) do?
stimulates the development of the follicle and production of oestrogen by the follicle in the follicular phase
What are the effects of oestrogen on the uterus?
Oestrogen stimulates the proliferation of the endometrium and prepares it for implantation and affects the consistency of the cervical mucus.
How does the cervical mucus change when there’s an increase in oestrogen?
It becomes thinner and waterier in consistency
What is ovulation and when does it occur?
Its the release of the ovum from a follicle in the ovary and usually it occurs mid-point of the menstrual cycle.
What happens during the luteal phase?
The follicle develops into a corpus luteum which secretes progesterone.
What does progesterone do?
promotes further development of the endometrium and prepares it for implantation if fertilisation occurs.
What are the impacts of fertilisation?
progesterone levels remain high and the corpus luteum does not regenerate
