FRHD 1010 Chapter 4: Chapter 4 - Human Development

• School: University of Guelph
• Department: Family Relations and Human Development
• Course: FRHD 1010
• Professor: Susan Chuang

Document Summary

Cephalocaudal principle: principle of biological development that growth tends to begin at the top, with the head, and then proceeds downward to the rest of the body. Proximal principle: principle of biological development that growth proceeds from the middle of the body outward. Teething y first tooth appears between 5 and 9 moonths of age. Teething: period of discomfort and pain experienced by infants as their new teeth break through their gums. Several signs: y salvia production y bite things often y tend to become irritable y reluctant to bottle- or breast-feed. Strategies to help: y give them something to bite or chew on y something cold to drink or eat y topical pain relievers rubbed on the gums. Neurotransmitters: chemical that enables neurons to communicate across synapses. Axon: part of the neuron that transmits electric impulses and releases neurotransmitters. Dendrites: part of a neuron that receives neurotransmitters. Overproduction/exuberance: burst in the production of dendritic connections between neurons.