PSY 220 Chapter Notes - Chapter 5: Skeletal Muscle, Temporal Lobe, Neural Development
16 Sep 2018
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Chapter 5 development and plasticity of the brain. It also forms excess synapses and discards the less active ones: experiences alter brain anatomy. Plasticity is greatest early in life but continues throughout life: many mechanisms contribute to recovery from brain damage, including restoration of undamaged neurons to full activity, regrowth of axons, readjustment of surviving synapses, and behavioral adjustments. The rest becomes the spinal cord: the fluid-filled cavity within the neural tube becomes the central canal of the spinal cord & the four ventricles of the brain, containing csf. At birth, the average human brain weighs about 350g; by the end of the first year, it weighs 1,000g, close to the adult weight of 1,200 to 1,400g. The olfactory bulb (bulbus olfactorius) is a neural structure of the vertebrate forebrain involved in olfaction, or the sense of smell. Flow of olfactory information from receptors to glomeruli layer. Within the olfactory bulb are discrete spheres of nerve tissue called glomeruli.
