PSY210H5 Lecture Notes - Lecture 3: Neural Tube, Functional Magnetic Resonance Imaging, Peripheral Nervous System
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Growth (particularly neuronal development) is cephalocaudal (head to foot) o. Neuronal development is also proximodistal (from close in to further out) in that gross muscle control develops before control of extremities o. Growth is very rapid during the first year, gradual during the preschool and elementary-school years, and rapid again in early adolescence o o. Fibres fuse, become longer and thicker, in childhood and this accelerates in adolescence (boys especially: bone. Bones begin as cartilage, which then hardens from the centre outward and turns to bone added to and turn to bone until end of growth a few years after puberty. Epiphyes (cartilage at ends) not turned to bone and are: fat. Accumulates later in pregnancy and in the first year of life. Children get leaner, but acquire more fat as they approach puberty, and rapidly in adolescence (girls especially)
