write the stage of human development described in each item
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write the stage of human development described in each item
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STAGES OF HUMAN DEVELOPMENT
1. Conception
2. Zygote (first through third day).
3. Blastocyst (second day through second week)
• By the end of the 2nd week, implants itself in uterine wall ("nidation")
4. Embryo (third through eighth week)
•Occasional primitive heart contractions at 2 weeks;
•Heart pumps blood and ECG tracing looks normal by 4th to 5th week;
• Some brain activity by the end of the 6th week;
• Normal heart functioning after the end of the 7th week.
5. Fetus (9th week until birth)
•develops fingernails, vocal chords, taste buds, and salivary glands and begins to urinate (3rd month)
• "quickening" = spontaneous movement, between the 13th and 20th week (3rd, 4th or 5th month).
6. Infant (birth until one year)
• Meltzoff research--rudimentary shape concepts
•self-motivated activity
7. Child (ages 1 year to 12 years)
• capacity to communicate
•presence of self-concepts and self-awareness
•reasoning (developed capacity to solve new and relatively complex problems)