Chapter 4 Prenatal Development

Question 1

First 14 days of zygote is called the _______ phase

Answer 1

Germinal

Question 2

The phase that is the 3rd week-8 weeks is called the

Answer 2

Embryonic period

Question 3

The length of the fetal period is

Answer 3

9 weeks -birth

Question 4

What stage does differentiation happen? And what happens during differentiation?

Answer 4

Germinal

(8cells) early stem cells take on distinct characteristics

Question 5

During the first 14 days what is the % of both natural and IVF conceptions fail to implant?

Answer 5

60% natural

70% IVF

Question 6

During the embryonic stage what happens?

Answer 6

Human structure
Neural tube becomes CNS
Brain and spinal column

Question 7

During 4th week of of pregnancy what happens?

Answer 7

Head shape

Heart beat

Question 8

5th week

Answer 8

Arm and leg buds

Question 9

8th weeks

Answer 9

20% of embryos abort
Face formed
Basic organs

Question 10

3rd month what organs take shape?

Answer 10

Sex organs

3oz

Question 11

Risk reduction terms

Answer 11

Teratology

Teratogens

Question 12

Time she particular organ or other body part is susceptible to teratogen damage

Answer 12

Critical exposure

Entire embryonic stage

Question 13

LBW

Answer 13

Less than 5.5 lbs

Most common cause of neonatal death

Question 14

Extremely low birth weight

Answer 14

Less that 2.5 lbs

Question 15

Very low birth weight

Answer 15

2.5-3 lbs

Question 16

Pre term

Answer 16

35 or fewer weeks

Question 17

SGA

Answer 17

Small for gestational age

Question 18

APGAR scale

Answer 18

Heart rate
Breathing
Color
Muscle tone
Reflexes 
Score of 7 or better

4 or less, critical care

Question 19

% of c sections

Answer 19

22 %

Question 20

2 different birth complications

Answer 20

Cerebral palsy
: brain damage and muscle control

Anoxia:
Lack of oxygen