Unit 2/Parenting

Question 1

3 Stages of an Embryo

Answer 1

Endoderm
Mesoderm
Ectoderm

Question 2

Endoderm

Answer 2

-Inner Layer
-Tube lined with mucus that develops into stomach, colon, liver, lungs, pancreas, bladder and thyroid glands.

Question 3

Mesoderm

Answer 3

-Middle Layer
-Cells that specialize into muscle, bone, cartilage, connective tissue, circulatory and respiratory system.

Question 4

Ectoderm

Answer 4

-Outer Layer
-Develops into skin, hair, eyes and cornea.
-Neural crest develops into peripheral nervous system
-Neural tube develops into brain, spinal cord, motor neurons, and retina.

Question 5

FIRST TRIMESTER: What Happens Week 6?

Answer 5

-Neural Tube Closes
-Heart Pumps Blood
-Basic Facial Features Appear
-Body Becomes “C-shaped” Curvature
-Small buds Appear (later arms and legs)

Question 6

FIRST TRIMESTER: What Happens Week 7?

Answer 6

-Brain and Face develop rapidly
-Nostrils are visible
-Buds become paddle shaped

Question 7

FIRST TRIMESTER: What Happens Week 9?

Answer 7

-Hands move
-Neck turns
-Hiccups begin
-Ovaries/Testes grow
-Heart Rate peaks to about 170bpm

Question 8

FIRST TRIMESTER: What Happens Week 10?

Answer 8

-Kidneys produce and release Urine
-Fingers and toes are free and moving (Showing signs of hand dominance)
-Now called a Fetus (Unborn Offspring)
-Eyelids temporarily fused shut

Question 9

FIRST TRIMESTER: What Happens Week 11?

Answer 9

-Head moves back and forth
-Jaw opens and closes
-Fetus can sigh and stretch and yawn
-Ovaries will contain reproductive cells

Question 10

FIRST TRIMESTER: What happens in the Third Month?

Answer 10

-Baby is Fully Formed
-Eyes move forwards
-Eyelids form and close
-Fist and Mouth opens and close
-Heart Beats 200 bpm
-Baby is3-4 inches
-Weight 1 ounce at the end of trimester

Question 11

SECOND TRIMESTER: Fourth Month?

Answer 11

-Energy is stored in body fat
-Formation of the bronchiole tree is complete
-Skin is covered by a white waxy substance called “vermix” to protect from amniotic fluid.

Question 12

SECOND TRIMESTER: Fifth Month?

Answer 12

-Development of breathing patterns and body movements
-Heart rate begins to follow circadian rhythm.
-Rapid eye movement begins
-Fine hairs called “lanugo” that keep baby warm
-Baby is 10 inches and 9 ounces

Question 13

SECOND TRIMESTER: Sixth Month?

Answer 13

-Bone Marrow begins to make blood cells
-Taste buds form
-Lungs produce Surfactant(Substance necessary for breathing)
-Brain has growth spurt, using more than 50% of fetal energy
-400-500% of weight increase

Question 14

THIRD TRIMESTER:

Answer 14

-Eyes are open and can sense light
-Production of Tears and pupil dilation
-Fetus can do somersaults due to step like motions
-Ears can distinguish high and low tones
-Weight doubles
Myelin Sheath thickens around brain nerves
-Umbilical cord is 20-24 inches long