Development Flashcards
Menarche
first menstrual cycle
does not signify fertility
about 13
Grasp Reflex
want to see if they grab your finger when you put in hand
Rooting Reflex
when you touch a baby’s cheek, they will open their mouths and “root”
Teratogens
alcohol drugs chemicals (DDT, PCBs (plastic), lead) radiation nutrition
Fetal Alcohol Syndrome
small, misproportioned head and lifelong brain abnormalities
leading cause of intellectual disabilities
Zygote
first two weeks fertilized eggs less than half survive beyond two weeks cells begin to differentiate after one week attach to uterine wall
Embryo
two to eight weeks
body organs begin to form and function
heart starts beating and liver makes red blood cells
ones with Y chromosomes secrete testosterone
embryo— e for 8
bry—> be —-> beat —-> heart beat
Fetus
after 8 weeks to birth looks humanish internal organs formed enough to function responsive to sound hear mother's voice
Age of viability
when fetus can exist on own
Primary sex characteristics
directly involved with reproduction/sex organs
Secondary sex characteristics
nonreproductive traits of males and females
neural pruning
get rid of things that aren’t used in the brain
PKU
can’t break down phenylalanine, which can cause a build up
early recognition and a certain diet can prevent health problems
Tay Sachs
deterioration of nerve cells that usually results in death by age four
Sickle Cell
crescent shaped blood cells
can block blood flow
Down Syndrome
trisomy 21
extra chromosome 21
distinctive facial features and intellectual disability
walking
in about a year
sit up by self
5 months
first ejaculation
about 13
may not have sufficient live sperm
Sucking reflex
see if they try to suck when you touch lip
Moro reflex
m for monster go up behind baby and scare them
make a loud noise to see that it cries
depth perception
visual cliff
don’t know when it develops, can’t test until 8 months
sight in newborns
can see 8-12 inches away (mom distance)
prefer to look at highly contrasting colors and complex patterns
newborn senses
all work except eyes are not fully developed and complex patterns