Critical reading means engaging in what you read by asking yourself questions such as, âwhat is the author trying to say?â or âwhat is the main argument being presented? Critical reading involves presenting a reasoned argument that evaluates and analyses what you have read.
Glial cells, sometimes called neuroglia or simply glia (Greek Î³Î»Î¯Î± and Î³Î»Î¿Î¯Î± glue; pronounced in English as either /ËÉ¡liËÉ/ or /ËÉ¡laÉªÉ/), are non-neuronal cells that maintain homeostasis, form myelin, and provide support and protection for neurons in the central and peripheral nervous systems.
Glial Cells ï§Microglia â immune system cells, engulf bacteria and cellular debris ï§Astrocytes â provide nutrients to neurons, maintain balance of the extracellular environment ï§Oligodendrocytes and Schwann cells â form myelin sheaths Figure 4.6 Copyright Â© 2009 Pearson Education, Inc. Neurons of the Peripheral Nervous System ï§Neurons in the PNS are either carrying messages to or from the CNS. ï§ A fferent = sensory neurons = neurons carrying messages TO the CNS. ï§ A rriving in the CNS. ï§ E fferent = motor neurons = neurons carrying messages FROM the CNS.