BIOH111 NERVOUS SYSTEM EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE

BIOH111 NERVOUS SYSTEM EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE Components of the CNS - Brain - Spinal cord Subdivisions of the autonomic nervous system - Parasympathetic division - Sympathetic division 3 basic functions of the nervous system - Sensory function - Integrative function - Motor function Astrocyte CNS - Forms & contributes to blood brain barrier (PROTECTION) Oligodendrocyte CNS - Forms myelin sheath Microglia CNS - Phagocytosis Ependymal CNS - Produce & circulate cerebral spinal fluid Schwann cell PNS - Regenerate or repair the myelin sheath Satellite cell PNS - Regulate movement of substances in and out of cells - Provide structural support and exchange of materials - Modulate the PNS following injury and inflammation - Support all of the other neurons and neuroglia cells Nucleus - Cluster of cell bodies in CNS Ganglion - Cluster of cell bodies in PNS Tract - Group of axons in CNS; interconnect neurons in spinal cord and brain Nerve (Bundle) - Group of axons located in PNS; connect brain to the peripheries (via cranial nerves) Leak channels - Gates alternate between open and closed positions (passive) Ligand-gated channel - Gates open and close in response to the binding of a ligand (chemical) stimulus *HAS RECEPTOR SITE Mechanically gated channel - Gates open and close in response to mechanical stimulatio