Term 2: Sexuality and reproduction Flashcards
What are three functions of the vagina?
- sexual intercourse
- discharge, secretion of fluids, menstruation
- provides a passageway for childbirth
What are the three parts of the uterus?
- fundus
- corpus (body)
- cervix
What is the function of the uterus?
To receive, retain and nourish a fertilized egg.
What is the function of the fallopian tube?
- passagway for sperm to meet ovum
- provides site of fertilisation
- provides a nourishing environment for ovum/zygote
- transporting of ovum/zygote to uterus
What are the functions of the ovaries?
- release hormones (oestrogen and progesterone)
- release eggs
- produce oocytes (immature ovum or egg)
- stimlautes ovum’s maturation during menstrual cycle
What are the two parts of a women’s 28 day reproductive cycle?
Ovarian cycle and uterine (menstrual) cycle.
What are the two stages of the ovarian cycle?
Pre-ovulatory (follicular) stage and post-ovulatory (luteal) stage.
What happens during the pre-ovulatory phas?
- follicles develop and produce oestrogen. All stop growing except for one.
- the dominant follicle matures and the oocyte inside is nourished.
- before ovulation, the follicle ruptures releasing the ovum in to the fallopian tube = ovulation.
What happens during the post ovulatory phase?
- after ovulation, the follicle that contained the ovum collapses.
- the remaining cells form a corpus luteum
- this secretes hormones for ten days to prepare endomentrium for fertilized ovum.
- if fertilisation does not occur, the corpus luteum degenerates and becomes a white nodular scar (corpus albicans)
What is the purpose of the uterine (menstrual) cycle?
Preparing uterus to receive fertilized egg.
What are the three phases of the uterine cycle?
- menstrual phase (days 1-5)
- proliferative phase (days 6-14)
- secretory phase (days 15-28)
What is FSH?
Follicle stimulating hormone.
- It is released by the anterior pituitary gland.
- stimulates growth and maturation of follicles in the ovary
- stimulates the production of oestrogen in the ovaries.
What is oestrogen?
Produced and released by developing follicles in the ovaries
- stimulates growth of egg within the follicle
- stimulates production and release of LH and FSH.
What is LH?
Luteinizing hormone.
- released by anterior pituitary gland.
- triggers ovulation
- promotes formation of corpus luteum and maintains structure and function of corpus luteum.
What is progesterone?
- produced and released by corpus luteum in the ovary after ovulation or by the placenta in pregnancy.
- prepares the uterus for pregnancy.
What is HCG?
Human chorionic gonadotropin.
- produced by embryo and placenta if fertilization occurs
- prevents the distintegration of the corpus luteum
- maintains progesterone development
What is amenorrhoea?
Absense of menstruation.
What is menorrhagia?
Excessive menstrual bleeding.
What are examples of three genetic disorders?
- cystic fibrosis
- muscular dystrophy
- sickle cell disorder