Biological Development

Question 1

Germinal period

Answer 1

Weeks 1 and 2
Conception
Fertilisation
Zygote

Question 2

Embryonic period

Answer 2

Weeks 3-8
- differentiation of tissue
- organ formation

Question 3

Fetal period

Answer 3

Months 2-9
- development of functionality

Question 4

Teratogens

Answer 4

Are agents that cause birth defects. Nicotine alchohol, STI’s

Question 5

Effects of teratogens depends on

Answer 5

• timing of exposure
• genetic characteristics
• postnatal environment

Question 6

Reflexes

Answer 6

Genetically wired behaviours
Specific patterns of motor response that are triggered by specific patterns of sensory stimulation.
- persist through life such as coughing, blinking, yawning
- disappear with neurological development such as grasping, rooting

Question 7

Perceptual and motor development

Answer 7

Motor development
- the emergence of the ability to execute physical action.
- locomotion
- reach and grasp
Preferential looking
- give “choice” and measure preferences

Question 8

Brain development

Answer 8

• Myelination continues after birth
• synaptic connections increase dramatically
• brain mass increase dramatically