Which ion concentration relationship is true when a neuron is at rest? (Select all that apply) More potassium (K+) inside the cell than outside the cell More sodium (Na+) inside the cell than outside the cell More chloride (Cl-) inside the cell than outside the cell More potassium (K+) outside the cell than inside the cell 00

Which ion concentration relationship is true when a neuron is at rest? (Select all that apply) More potassium (K+) inside the cell than outside the cell More sodium (Na+) inside the cell than outside the cell More chloride (Cl-) inside the cell than outside the cell More potassium (K+) outside the cell than inside the cell 00

Anatomy & Physiology

1st Edition

ISBN:9781938168130

Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Publisher:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Chapter12: The Nervous System And Nervous Tissue

Section: Chapter Questions

Problem 4ILQ: View the University of Michigan Webscope (http://openstaxcollege.org/l/nervefiber) to see an...

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Stellate cells initially process sensory input to the cortex, whereas pyramidal cells send fibers from the cortex to terminate on efferent motor neurons. (True or false)
View the University of Michigan Webscope (http://openstaxcollege.org/l/nervefiber) to see an electron micrograph of a cross-section of a myelinated nerve fiber. The axon contains microtubules and neurofilaments, bounded by a plasma membrane known as the axolemma. Outside the plasma membrane of the axon is the myelin sheath, which is composed of the tightly wrapped plasma membrane of a Schwann cell. What aspects of the cells in this image react with the stain that makes them the deep, dark, black color, such as the multiple layers that are the myelin sheath?
In what way does the interior surface of the cell membrane of a resting (non-conducting) neuron differ from the external environment? The interior is: positively charged and contains less sodium. negatively charged and contains less sodium. negatively charged and contains less potassium positively charged and contains more sodium.
When the neuron’s membrane is at rest, where are the sodium ions and potassium ions most concentrated?A. Sodium is mostly outside and potassium is mostly inside.B. Sodium is mostly inside and potassium is mostly outside.C. Both ions are mostly inside the cell.D. Both ions are mostly outside the cell.
At resting membrane potential for a typical neuron (-70 mV), which ion does NOT move?Na+Ca2+K+Cl-None
Describe how resting potential is form in a neuron. Key difference from in and out a neuron and how they are maintain and proteins involved.
Sense of smell, also known as olfaction, is the ability to perceive and interpret odours. When a chemical molecule interacts with an odour-receptor protein located on the sensory neuron in the nose, an action potential is triggered and sent along the axon. The interaction between a chemical molecule and an odour-receptor protein will first initiate the movement of _____A______ ______B_____ the _____C______ of the _____D_____ neuron. Using the numbers given below, identify A to D. A B C D Chlorine ions Potassium ions Sodium ions Into Out of Axon Dendrite Axon terminal Nodes of Ranvier Interneuron Motor neuron Sensory neuron A: AnswerB: AnswerC: AnswerD: Answer
You have a photoreceptor cell in a dish. You are recording its membrane potential while flashing different intensities of light. Which of the following would you observe? Group of answer choices The cell hyperpolarizes, with brighter light causing more hyperpolarization than dimmer lights The cell depolarizes, with brighter light causing more depolarization than dimmer lights If the light is bright enough to reach threshold, it will fire an action potential No change in membrane potential will be observed
When a neuron is at rest,_____ . a. it is at threshold potential b. voltage-gated sodium channels are open c. sodium–potassium pumps are operating d. it contains more sodium ions than the surrounding interstitial fluid
Excitatory neurons A and B both synapse with neuron C. Neuron A releasesa neurotransmitter, and neuron B releases the same type and amount ofneurotransmitter plus a neuromodulator that produces EPSPs in neuron C.Action potentials produced in neuron A alone can result in action potentialproduction in neuron C. Action potentials produced in neuron B alone alsocan cause action potential production in neuron C. Which results in moreaction potentials in neuron C, stimulation by only neuron A or stimulationby only neuron B? Explain.
With respect to the three structural types of neurons (unipolar, bipolar & multipolar): State which parts of each type of neuron receive information, which parts integrate information, and which parts conduct the output signal of the neuron. Describe the location of the cell bodies of each type of neuron within the nervous system.
Suppose you placed an isolated neuron in a solution similar toextracellular fluid and later transferred the neuron to a solution lackingany sodium ions. What change would you expect in the resting potential?