BIO SCI 45 Lecture Notes - Lecture 4: Omega-3 Fatty Acid, Myelin, Grey Matter
5 Sep 2018
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Document Summary
Increased risk for stroke, dementia, ad, increased blood pressure. Decrease in gray matter, associated with reductions in neuron number. Changes in white matter associated with reductions in diameter of myelin sheath. Neurogenesis is how neurons are generated from neural stem cells. Stem cells can make precise copies of themselves (self-renewal) and can mature into different cell types (differentiate) Maintain proper tissue homeostasis or as an internal repair system. Are the most versatile of the stem cell types. Have potential to give rise to any type of cell. Can give rise to an entire organism. After a few days of embryonic development, the cells begin to specialize into pluripotent stem cells. Can give rise to all cell types. Inner cells cannot form an organism without outer layer. Less plastic and more differentiated stem cells. Give rise to a limited range of cells within a tissue type. Offspring of pluripotent cells become progenitors of blood cells, skin cells and.
