psy 220- chap 5.docx - Chapter 5 Definitions 5.1 1 Celiac...

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Chapter 5 Definitions: 5.1 1. Celiac disease: an inherited digestive problem in which gluten (the protein found in all wheat products triggers an immune response that leads to inflammation and damages the small intestine (If their disease is untreated it can lead to malnutrition which stunts growth and delays puberty) Synapse : in the nervous system, where it permits a neuron to pass an electrical or chemical signal to another neuron -Growth follows the cephalocaudal principle : growth occurs in head-to-tail direction 1st year after birth, the trunk grows the fastest 2nd year, the legs are the fastest growing part of body - Proximodistal principle : growth can be seen during prenatal period in where development occurs from the center of the body outward. Chest & internal organs form before arms,hands,fingers - Orthogenetic Principle: development starts globally & undifferentiated & moves toward increasing differentiation & hierarchical integration
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2. Catch up growth : a phenomenon in which children who have experienced growth deficits will grow rapidly and catch up to the growth trajectory they are genetically programmed to follow 3. Synaptogenesis: growth of synapses 4. Reflex: an unlearned and involuntary response to a stimulus
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5. Newborns spend half of their sleeping hours in active sleep,
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