* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Nerve Cells and Electrical Signaling
Embodied cognitive science wikipedia , lookup
Feature detection (nervous system) wikipedia , lookup
Synaptogenesis wikipedia , lookup
Synaptic gating wikipedia , lookup
Nonsynaptic plasticity wikipedia , lookup
Patch clamp wikipedia , lookup
Neuroanatomy wikipedia , lookup
Signal transduction wikipedia , lookup
Neurotransmitter wikipedia , lookup
Neuroregeneration wikipedia , lookup
Evoked potential wikipedia , lookup
Biological neuron model wikipedia , lookup
Node of Ranvier wikipedia , lookup
Nervous system network models wikipedia , lookup
Chemical synapse wikipedia , lookup
Channelrhodopsin wikipedia , lookup
Single-unit recording wikipedia , lookup
Neuropsychopharmacology wikipedia , lookup
Action potential wikipedia , lookup
Membrane potential wikipedia , lookup
Electrophysiology wikipedia , lookup
End-plate potential wikipedia , lookup
Molecular neuroscience wikipedia , lookup
PHYSIOLOGY FOR THE EXERCISE AND SPORT SCIENCES Quiz 3 Page 1 Nerve Cells and Electrical Signaling Type the question and your answer, in complete sentences, on a separate sheet of paper. Turn in your answers to the Lab Instructor. 1) Describe the anatomical organization of the nervous system, including how those nerves are organized within the nervous system. 2) Describe the structure of a neuron and the important consequences of that arrangement. 3) A number of modified epithelial cells, acting as sensory receptors, innervate a single nerve cell. Some of these cells release excitatory neurotransmitters, while others release inhibitory neurotransmitters. How are these responses integrated by the nerve cell to determine whether an action potential will be generated or not? 4) Every cell within the body has a potential difference across its membrane. Discuss the role of potassium ions in creating that potential difference across the cell membrane at rest. Include in your discussion a description of equilibrium potential. 5) Several ions are responsible for resting membrane potential. Describe the forces that determine resting membrane potential. 6) Graded potentials develop in the cell body of neurons as well as in sensory receptor cells. In order for sensory information to reach the central nervous system that graded potential must be converted into an action potential. How are graded potentials created, and how are they different from action potentials? 7) Describe the voltage gating of ion channels and how this plays a role in an action potential. 8) Once an action potential is generated, there is a delay before another action potential can be generated. Name and describe the basis for the two refractory periods. 9) Describe how an action potential, originating at the axon hillock, is propagated along the axon. Include those factors that can alter conduction velocity. 10) Describe the types of ion channels that are found in a cell and how those channels are gated. MICHELLE A CLEARY PhD, ATC