Health Sciences 2700A/B Chapter Notes - Chapter 4: Synaptic Pruning, Primitive Reflexes, Neuroplasticity
9 Apr 2020
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Chapter 4: physical, sensory, and perceptual development in infancy. Brain and nervous system develop rapidly during the first two years. At birth, the midbrain and medulla are the most fully developed. All brain structures are composed of two basic types of cells: Triple body weight in the first year of life. They have larger heads to hold their nearly full-sized brains. Least developed part of the brain at birth is the cortex. Results from growth of both dendrites and axons. Occurs rapidly in the cortex during the first few years after birth. Each burst of synaptogenesis is followed by a period of synaptic pruning to make the. Synaptogenesis: the development of synapses: neurons, glial cells nervous system more efficient. Once pruning process is completed, each muscle fibre is connected to only one motor neuron. Neuroplasticity: the brain"s ability to reorganize neural pathways and connections.
