Human Development
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Transcript Human Development
Human Development
Cells-basic unit of life.
Body system-group of organs that work
together to carry out related tasks.
Digestive system
Endocrine system
Development After Fertilization
Fertilized cell divides
Embryo-first eight weeks of pregnancy.
Fetus-eight weeks to birth.
Cells development into tissues, organs
and body systems.
Pregnancy last 9 months
Fetus receives nutrients and oxygen from the
umbilical cord.
Care During Pregnancy
Do’s
Eat healthy
Vegetables
Protein
Calcium
Get regular check-ups
The
closer to the pregnancy the more you visit the
doctor.
Care During Pregnancy
Beware of infections
Flu
Colds
Fifths
disease
Chicken pox
Care During Pregnancy
Don’t
Smoke or use tobacco
Baby
is more likely to have allergies, asthma and
respiratory infections.
Drink alcohol
Baby
is more likely to develop physical and mental
problems (fetal alcohol syndrome).
Baby is more likely do die of SIDS
Care During Pregnancy
Take any unnecessary drugs, legal or illegal
Any drug mom takes the baby also takes.
Heredity
Heredity-traits you get from your parents.
Chromosomes-threadlike structures that
carry the codes for inherited traits
All human cells contain 46 chromosomes, or
23 pairs.
Genes-basic unit of heredity.
Sperm and egg have 23 chromosomes each.
Chromosomes in sperm determine sex of the
baby.
Heredity
Eggs contain an X (female) chromosome.
Sperm contain either an X or Y (male)
chromosome.
XX
chromosome combo produces a female.
XY chromosome combo produces a male.
Downs Syndrome-genetic disorder in which a
person’s cells have 47 chromosomes instead
of 46.