unit 2.1: gamete production and fertilisation Flashcards
(22 cards)
what is the site of sperm (spermatozoa) production
testes
what else does the testes produce
testosterone
where in the tested are sperm produced
tiny tubes called seminiferous tubules
what do seminiferous tubules unite to form
the sperm duct
what are the cells between the seminiferous tubules called
interstitial cells
what do interstitial cells produce
testosterone
what does fertilisation depend on (males)
motility of sperm
motility requires a fluid medium
a source of energy
what does the prostate gland secrete
a lubcricating fluid containing enzymes
what is the job of the enzymes in the liquid secreted by the prostate
keeps the fluid at optimum viscosity for sperm motility
what is secreted by seminal vesicles
a liquid rich in fructose
also contains hormone like compounds
what is the purpose of the fructose in the liquid secreted by the seminal vesicles
provides energy for sperm motility
what is the purpose of the hormone like compounds in the liquid secreted by the seminal vesicles
stimulates contractions of the female reproductive tract aiding sperm motility to reach the oviduct
what is semen
the collective name for the milk liquid:
sperm
fluid from seminal vesicles and prostate
where are eggs or ova formed in females
ovaries
what is also produced by the ovaries
oestrogen
progesterone
what do the ovaries contain
immature eggs at various stages of development
what is each ovum surrounded by
follicle
what is a follicle
protects the ovum and secreted oestrogen, after ovulation also secretes progesterone
where are ova released during ovulation
the oviducts
what happens if sperm is present in the oviduct
fertilisation may occur
what is a fertilised egg known as
zygote
what does a zygote develop into
an embryo
