Reproduction Flashcards
Ovulation
Egg is released from an ovary
Implantation
When the embryo is implanted in the womb
Fertilisation
When the sperm’s nucleus(head) joins with the egg’s nucleus and an embryo is formed after cell division
Functions of the placenta?
Passes: -Oxygen(mother to baby)
- Food(mother to baby)
- Waste Products(baby to mother)
- Harmful substances(mother to baby)
Umbilical cord
Connects placenta to baby at belly button
Stages of birth
Muscles in uterus contract-Labour Amnion bursts-Breaking of the waters Cervix widens Baby is pushed out headfirst Umbilical cord is clamped
Reproduction is..
The production of new individuals
Gametes
Sex cells
Testis
Make sperm
Make Testosterone
Scrotum
Holds testis outside body
Keeps them below 37’C
Penis
Allows sperm to pass from male to female
Sperm ducts
Carry sperm from testis to penis
Semen
Seminal fluid+sperm
Ovary
Produces eggs/female hormone
Uterus/womb
Holds baby during pregnancy
Cervix
Entrance to womb
Fallopian tube
Carries egg from ovary to womb
Fertilisation takes place here
Vagina
Holds penis during sexual intercourse
Allows childbirth
Puberty
When a person becomes sexually mature
Puberty in boys
Sexual: Increased interest in girls,
Sperm begins to be produced
Physical: Pubic and facial hair
Deepening of voice(larynx widens)
Puberty in girls
Sexual: Mentrual cycle begins
Increased interest in boys
Physical: Pubic hair
Breasts grow
Contraception
Prevention of fertilisation or pregnancy
Preventing fertilisation
Condom/contraception pill
Preventing implantation
Pills
Afterbirth
Uterus continues to contract
Placenta and umbilical cord pushed out
Menstruation Period
Days 1-5
Period/menstruation occurs
