Chapter 4: Physical Growth, Maturation, And Aging

Question 1

Embryonic development:

Answer 1

Cell number increases and differentiate

Question 2

4w embryonic

Answer 2

Limbs are roughly formed and heart beats

Question 3

8w

Answer 3

Ears, eyes, nose, mouth, fingers, toes-human form

Question 4

Ectoderm

Answer 4

Skin, teeth, NS, various glands, sensory receptors

Question 5

Endoderm

Answer 5

Epithelial lining of auditory tube, larynx, urinary bladder, urethral, prostate

Question 6

Mesoderm

Answer 6

Muscle, blood, connective tissue, teeth, adrenal cortex, skeleton, nervous and circulatory system

Question 7

2nd month

Answer 7

Head develops rapidly
Face forms
Major organs-digestive
Buds for limbs
Circulatory system between embryo and mother 
Placenta

Question 8

3rd month

Answer 8

Digestive organ begins functioning 
Ossification
Buds for teeth
Sex organs 
Arms legs fingers make spontaneous movement

Question 9

4th month

Answer 9

reflect movement
Lower body parts grow more rapidly
Most bones distinct

Question 10

5th month

Answer 10

Lanugo hairs
Vernix
Finger/toes nails

Question 11

6th month

Answer 11

Cerebral cortex becomes layered (movement)
Eyes complete
Body lean, but fat cells forming

Question 12

7th month

Answer 12

Fetus capable of living outside

Central fissures and comvutilns

Question 13

8-9th months

Answer 13

Fat deposition
Myelin action of brain
Organ activity steps up

Question 14

Prenatal development:

Answer 14

Growth begins instant ovum and spermatosson fuse

-genetic and intrinsic factors