Module Four: Prenatal and Newborn Development

Question 1

germinal period

Answer 1

• fertilized egg implants into lining
• zygote to blastocyst

Question 2

first trimester (1-3 months)

Answer 2

• placenta forms
• major organs form
• cephalocaudal and proximodistal development
• embryo

Question 3

second trimester (4-6 months)

Answer 3

• fetus
• respiratory organs finalize development
• sucking reflex
• response to light
• circadian rhythm begins

Question 4

third trimester (6-9 months)

Answer 4

• body fat development
• 36-37 weeks is EARLY term

Question 5

third week nervous system development

Answer 5

• neural groove forms and becomes neural tube
• open region ventricles and spinal cord
• end of week 8, forebrain, midbrain and hindbrain are formed

Question 6

viability

Answer 6

• ~24 weeks
• babies will likely survive in NICU
• first chance of survival outside the womb

Question 7

brain at 24 weeks

Answer 7

• glial cells (support neurons) begin to form
• most neurons have formed
• fetus can feel pain

Question 8

teratogens

Answer 8

environmental factors that contribute to birth defects
i.e. alcohol, maternal diseases, drugs

Question 9

prematurity

Answer 9

37 weeks

Question 10

anoxia

Answer 10

temporary lack of oxygen to the brain