human reproduction Flashcards
where are the male gametes formed
testes
where are the female gametes formed?
ovaries
what is a gonad
an organ that produces sex cells in animals
what are the male gonads
testes
what is the scrotum
the pouch which holds the testes outside the body
what temperature is needed for meiosis to occur in the testes? how is this achieved?
35 degrees… testes held outside the body
what are the tubules lined with in each testis
diploid sperm producing cells
where is testosterone produced?
testes
give two roles of the placenta
movement of food from mother to foetus, movement of wates from foetus to mother, prevents blood mixing
outline a description of the birthing process including hormones
progesterone levels drop, mucus plug falls out, amniotic fluid released, uterus begins to contract, cervix dialates to 10cm, baby pushed out, afterbirth, umbilical cord cut
state two methods of birth control
condom, contraceptive pill, IUD, vasectomy
name the hormone responisble for milk production
prolactin
state two biological benefits of breastfeeding
balanced supply of nutrients, supplies antibodies, milk provided at the right temperature
draw a large diagram of the male reproductive parts and label: testis, sperm duct, prostate gland, urethra, penis, scrotum
describe the differences between the male and female gametes in relation to their size, number produced, frequency of production
low number of female gametes high number of male gametes, egg produced monthy and continuously in males, egg is large while sperm is much smaller
what is meant by secondary sexual characteristics
features that distinguish males from females other than the sex organs
name the hormone responsible for the production of male secondary sexual characteristics
testosterone
give one cause of male infertility
low sperm count, low sperm motility
what is the role of the menstrual cycle
to prepare the uterus for pregnancy
name the event involving the uterie from days 1-5 of the menstrual cycle
menstruation (period)