Nervous System Quiz

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CHAPTER 12 - THE NERVOUS SYSTEM AND NERVOUS TISSUE Name the major divisions of the nervous system, both anatomical and functional The nervous system has two Anatomical Divisions: 1. Central Nervous system(CNS) CNS includes Brain and Spinal Cord. This system is integrative and controls system. While the brain has three main parts, the cerebrum, the cerebellum, and the brain stem. 2. Peripheral nervous system (PNS) PNS include Cranial Nerves and spinal Nerves. It is communication line between the CNS and the rest of the body. Nervous system can be classified into Sensory division and Motor Division based on functionally 3. Sensory Division It contains Somatic and Visceral sensory nerve fibers which conduct impulses from receptor to the CNS. 4. Motor…show more content…
Axons are in effect the primary transmission lines of the nervous system, and as bundles, they help make up nerves. Multipolar neurons contain one axon and many dendrites. List the types of glial cells and assign each to the proper division of the nervous system, along with their function(s) The glial cells surround neurons and provide support for and insulation between them. Glial cells are the most abundant cell types in the central nervous system. There are six types of glial cells. Four of them are found in the CNS division and two are found in the PNS division. CNS glia • Astrocyte: They regulate the transmission of electrical impulses within the brain. • Oligodendrocyte: provide support and insulation to axons in the central nervous system of some vertebrates. • Microglia: act as the first and main form of active immune defense in the central nervous system (CNS). • Ependymal cell: filters blood to make cerebrospinal fluid (CSF), the fluid that circulates through the CNS. PNS glia • Satellite cell: role as a regulator of neuronal microenvironment is further characterized by its electrical properties which are very similar to those of…show more content…
This is called integration. Stimuli are compared with, other stimuli, memories of previous stimuli, or the state of a person at a particular time. This leads to the specific response that will be generated. Describe the components of the membrane that establish the resting membrane potential Most cells in the body make use of charged particles, ions, to build up a charge across the cell membrane. Cells make use of the cell membrane to regulate ion movement between the extracellular fluid and Cell Body. The electrical state of the cell membrane can have several variations. A potential is a distribution of charge across the cell membrane, measured in millivolts (mV). The standard is to compare the inside of the cell relative to the outside, so the membrane potential is a value representing the charge on the intracellular side of the membrane based on the outside being zero, relatively speaking. It has two components an electrical and a chemical. The electrical is caused by the charge of ions. And the chemical gradient is caused by the concentration of those ions. Substances that have electrical charges Na+, K+ ions, and also other ions such as

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