human reproductive system Flashcards
3.8
what does the prostate gland and the seminal vesicles do?
release liquids into the sperm duct, which mixed with the sperm cells to form semen. the liquid provides nutrients to the sperm
where does sperm pass through?
the sperm duct to be mixed with fluids produced by the glands before being passed into the urethra for ejaculation
what is the urethra?
a tube running down the centre of the penis that can transport either urine or semen
what prevents the urine and semen from mixing in the urethra?
a ring of muscle in the urethra
what are the testes contained in?
a bag of skin (scrotum)
what do the testes do?
where sperm cells are produced by meiosis
produces the hormone testosterone
what is the scrotum?
a sac supporting the testes outside the body to ensure sperm are kept at temperature slightly below body temperature
what does the penis do?
passes urine out of the body from the bladder and allows semen to pass into the vagina of a woman during sexual intercourse
what is the ovary?
where egg cells are formed by meiosis in the follicle
produces the hormones oestrogen and progesterone
contains ova which will mature and develop when hormones are released
what is the oviduct?
egg cells travel down this to the uterus
lined with cilia which move the cell
site of fertilisation
what is the uterus also known as?
the womb
what is the uterus?
a lining forms in the uterus, where the embryo will implant
the foetus develops in the uterus, which has a thick muscular wall
the uterus contracts during labour
muscular bag with a soft lining where the fertilised egg (zygote) will be implanted to develop into a foetus
what is the cervix?
narrow opening to the uterus
this dilates during labour to allow the baby to be born
ring of muscle at the lower end of the uterus to keep the developing foetus in place during pregnancy
what is the vagina?
muscular tube that leads from the cervix to the outside of the woman’s body.
a man’s penis goes into the woman’s vagina during sexual intercourse and the baby passes through the vagina when it is born
