Prenatal Development Flashcards
What are the 3 stages of development?
Zygote, Embryo, Fetus
How long does the zygote stage last?
week 0-2
How long does the Embryo stage last?
week 3-8
How long does the Fetus stage last?
week 9-38
What happens during the zygote stage?
massive cell division
What happens during the embryo stage?
cell differentiation, most rapid development, most vulnerability, heartbeat, brain development, and movement begins
When is the heartbeat first detected?
4 weeks
When is there rapid brain development and movement begins?
5-6 weeks
What happens in the fetus stage?
growing and finishing, all internal organs present, heart and brain structure
When are all internal organs present?
9 weeks
When are the heart and brain structures developed?
10-12 weeks
When can a baby survive on its own if born?
28 weeks
When can a fetus hear external sounds from the womb?
28 weeks
When is conception?
the last menstrual period (14th day of cycle)
When are babies responsive to touch?
9 weeks after conception
When are babies able to see?
28 weeks after conception
When is hearing developed for the fetus?
26-28 weeks after conception
When are taste and smell developed for the fetus?
experiences persist as preferences postnatally
When did Thalidomide affect babies is taken?
When the mother took it between 4-6 weeks after conception
When is vision 20/120 in infants?
5 weeks
When is infants vision 20/20?
8 months
When is infants color similar to adults?
2 months but better at 6
WHen do infants explore inner features of face because they cannot see whole face?
2-3 months
When can infants perceive physical seperation?
2 months
When can infants perceive binocular disparity and stereopsis?
3-4 months
When can infants perceive monocular cues?
5-7 months
When does rooting disappear?
4 weeks
When does the palmar grasp disappear?
3-4 months
When does the moro/startle disappear?
6 months
When does the babinski change?
12 months
What direction does babinski change too?
fan out (baby) to fan in (adult)
When does stepping disappear and reappear?
disappears at 2 months and reappears at 12 months
When does a baby lift their head?
4 weeks
When does a baby use arms for support?
2-4 months
When does a baby reach/grasp for objects?
3-4 months
When does a baby sit without support?
5-7 months
When does a baby crawl?
5-11 months
When does a baby walk alone?
11-14 months
