human development from conception to birth Flashcards
what are the stages of conception
ovulation, fertilization, zygote, embryo, foetus ,neonate
what happens in ovulation
female has a menstrual cycle
oestrogen increases
uterus lining thickens
egg is released from ovary
temperature changes just before ovulation
egg released and travels down the fallopian tube, sperm will be able to reach and fertilize the egg
what happens in fertillisation
sperm and egg combine and create a zygote
zygote will spend 3-4 days in the fallopian tubes during will rapildly divide into 12-15 cells
have high levels of progesterone
what are the different phases of ovualtion
follicular phase
ovulation phase
luteal phase
menstrual phase
what happens in the follicular phase
egg develops in your ovaries inside follicles
what happens in the ovualtion phase
ovary releases the egg that develops in the follicular phase
what happens in the luteal phase
starts when an egg begins its journey to you uterus, it ends when you get your period
what happens in the menstrual phase
uterine lining sheds through your vagina
what happens when the zygote is created
fertilised egg, cluster of cells
once its implanted and divided it is referred as a embryo for the next 8 weeks
what happens when it turns into an embryo
cells in the blastocyst develop into a system that will support the embryo as it develops
system includes the placenta, the amitotic sac and fluid and the umbilical cord and develops into a baby
what happens when its a foetus
9 weeks- is called a foetus will have facial features, also have arms and legs
12 weeks- heartbeat will be audible
16 weeks- can blink
uterus expands
28 weeks- babies have a good chance of survival if born prematurely
37 weeks- babies are full term which means they can survive
what happens as a neonate
called neonate for the first 28 days of life
require constant care
what age ranges are infancy
birth to 24-26 months
what age ranges are early childhood
24-26 months to 7yrs
what age ranges are later childhood
7yrs- puberty
what age ranges are adolescence
puberty- sexual maturity
physical milestones for 0-1
holds head up
crawling
creeping
co-ordinate small muscles
walk