M45 Infant Development

Rooting Reflex

• Newborns close their hands tightly when their palms are touched

• Newborns extend their toes when the soles of their feet are touched

• When newborns are touched on one of their cheeks, they turn their heads in that direction and open their mouths

• When babies lie on their backs, they turn their heads to one side. If they turn to the right, their right hands go out, and their left arms go up.

• When newborns are startled by a sudden movement, they spread their arms and legs apart and then bring them together again.

Grasp Reflex

• Newborns close their hands tightly when their palms are touched

• Newborns extend their toes when the soles of their feet are touched

• When newborns are touched on one of their cheeks, they turn their heads in that direction and open their mouths

• When babies lie on their backs, they turn their heads to one side. If they turn to the right, their right hands go out, and their left arms go up.

• When newborns are startled by a sudden movement, they spread their arms and legs apart and then bring them together again.

When is the embryonic stage?

• 0-2 weeks

• 3-8 weeks

• 9 weeks - birth

• 8-12 weeks

When is the fetal stage?

• 0-2 weeks

• 3-8 weeks

• 9 weeks - birth

• 8-12 weeks

Harmful chemicals or viruses that can be transferred from a mother to her developing fetus are called

• schemas.

• attachments.

• teratogens.

• zygotes.

• menarche.

When a baby spreads her toe when the bottom of her feet are stroked is the

• Babinski reflex
• Babkin reflex
• stepping reflex
• Startle reflex

It involves three distinct components: spreading out the arms (abduction) un-spreading the arms and crying (usually)

• Grasping reflex
• Moro reflex

• Tonic Neck reflex
• Babinski reflex