Chapter 4 (Part 1): Prenatal, Newborn and Infants Development

Question 1

What happens to a fertilized egg in the first two weeks after
conception?

Answer 1

a fertilized egg travels through fallopian tubes to uterus

Question 2

When do body structures and internal organs emerge in
prenatal development?

Answer 2

At the end of week eight, organ systems have developed and are ready for further maturation.

Question 3

When do body systems begin to function well enough to
support life?

Answer 3

7 months

Question 4

What are the 3 periods of prenatal development?

Answer 4

Zygote, embryo, fetus

Question 5

When conception typically occurs?

Answer 5

two weeks after the pregnant
parent’s last menstrual period

Question 6

Period of the Zygote

Answer 6

-After fertilization (natural or in vitro), the zygote travels down
the fallopian tube and is implanted in the uterine wall

-Implantation triggers hormonal changes to prevent
menstruation

Question 7

Cells that develop into a baby

Answer 7

germ disc

Question 8

Period of Embryo (week 3-8)

Answer 8

Ectoderm, Mesoderm, Endoderm

Question 9

amniotic sac

Answer 9

the umbilical cord connects the
embryo to the placenta

Question 10

cephalocaudal principle

Answer 10

head develops before the rest of the body

Question 11

proximodistal principle

Answer 11

growth of parts near the centre of the body