| A | B |
|---|
| neurons | nerve cells |
| dendrites | communication networks among nerve cells |
| myelination | the process in which axons are coated with an insulating sheath |
| kwashiorkor | protein deficiency during toddlerhood |
| marasmus | protein deficiency during the first year in which growth stops and body tissues waste away |
| habituation | declining physiological response to a familiar stimulus |
| gross motor skill | running or climbing |
| fine motor skill | picking up an object |
| reflex | an involuntary response |
| sucking reflex | newborns suck anything that touches their lips |
| protein-calorie malnutrition | the most common serious nutrition problem of infancy |
| transient exuberance | the phenomenal increase in neural connections over the first 2 years |
| developmental biodynamics | maturation of the developing person's ability to move through, and with, the environment |
| otitis media | ear infection |
| neurotransmitter | a brain chemical that carries information across the synaptic gap between two neurons |
