Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 42, Problem 5TY
Summary Introduction
Introduction: Neurons can be defined as the part or unit of nervous system that is involved in carrying of electrical impulses. The neurons are responsible for transmission of information in the form of electrical signals.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The difference in charges across the plasma membrane of anunstimulated neuron is calleda. an EPSP.b. the resting membrane potential.c. an IPSP.d. the graded potential.e. the action potential.
Post synaptic neurons membrane potentials are less negative than resting membrane potentials when this occur
A. Creates a new set point for the resting membrane potential
B. Has a lower propensity to produce an action potential
C. Reacts by generating action potential
D. Higher chance of reaching the potential threshold
The primary difference between an EPSP and an IPSP is the
a) overall speed
b) degree of effect
c) direction of membrane polarization
d) ease of elicitation
Chapter 42 Solutions
Biology
Ch. 42.1 - Prob. 1CCCh. 42.2 - Prob. 1CSCh. 42.3 - Prob. 1CSCh. 42.3 - Prob. 2CSCh. 42.3 - Prob. 1CCCh. 42.3 - Prob. 2CCCh. 42.4 - What key prior observation led Loewi to develop...Ch. 42.4 - CoreSKILL The results of Loewis experiment...Ch. 42.4 - Prob. 3EQCh. 42 - Prob. 1TY
Ch. 42 - Prob. 2TYCh. 42 - The myelin sheath a. is produced by neurons in the...Ch. 42 - Prob. 4TYCh. 42 - Prob. 5TYCh. 42 - Which of the following contribute(s) to the...Ch. 42 - Prob. 7TYCh. 42 - Prob. 8TYCh. 42 - Prob. 9TYCh. 42 - Prob. 10TYCh. 42 - Prob. 1CQCh. 42 - Prob. 2CQCh. 42 - Prob. 3CQCh. 42 - Describe the difference between an electrical...Ch. 42 - Prob. 2COQ
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of these is least likely to trigger an action potential in a post-synaptic cell? A)EPSPs and IPSPs arrive simultaneously at multiple synapses. B)The other choices are equally likely to trigger an action potential. C)Single EPSPs arrive simultaneously at multiple synapses. D)Multiple EPSPs arrive rapidly at a single synapse.arrow_forwardWhen summation of multiple graded synaptic potentials occurs which of the following would "neutralize/cancel out" an EPSP in dendrites? A. opening a voltage gated sodium channel B. opening a voltage gated calcium channel C. openning a ligand gated calcium channel D. closing a ligand gated potassium channel E. opening a ligand gated chloride channelarrow_forwardA common feature of action potentials is that they(A) cause the membrane to hyperpolarize and then depolarize.(B) can undergo temporal and spatial summation.(C) are triggered by a depolarization that reaches threshold.(D) move at the same speed along all axons.arrow_forward
- Nerve membrane hyperpolarization after an action potential a)Is the movement of membrane potential voltage below normal resting potential voltage. b) This Is mostly due to the slow-closing of K+ channels. c)Makes it more difficult to evoke another action potential. d) This Is mostly due to the slow-closing of Na+ channels.arrow_forwardAssume a neuron's membrane potential is -60 mV, what's the net consequence on the membrane potential of a 5 picoamp (pA) sodium current that occurs simultaneously with a 5 pA chloride current? a. There's a 5 pA hyperpolarizing current b. There's a 10 pA depolarizing current c. There's a 10 pA hyperpolarizing current d. There's a 5 pA depolarizing current e. There's no change in the membrane potentialarrow_forwardThe cell body of a neuron does all of the following except a. release neurotransmitter into the synaptic cleft. b. produce synaptic vesicles containing neurotransmitter that are subsequently transported to the synaptic knob. c. conduct graded potentials to the initial segment. d. receive graded potentials from dendrites.arrow_forward
- There is a type of toxin found in the liver of the puffer fish that prevents the opening of voltage-gated Na+ channels in neurons. The effect of this toxin is to: Group of answer choices A. prevents the initiation of the action potential B. depolarizes the membrane potential and maintains it depolarized C. prolongs the return of the membrane potential to the resting level D. increases the duration of the action potentialarrow_forwardWhich of the following is true regarding the difference between graded and action potentials? a.) Action potential occur only when the surface of the neuron is myelinated, but graded potentials occur in both in both myelinated and non-myelinated neurons. b.) The magnitude of action potential depends on the magnitude of the stimulus, whereas graded potentials are all or none. c.) The magnitude of graded potential depends on the magnitude of the stimulus, whereas action potentials are all or none.arrow_forwardWhat happens when a resting neuron’s membranedepolarizes?(A) There is a net diffusion of Na+out of the cell.(B) The equilibrium potential for K+(EK) becomesmore positive.(C) The neuron’s membrane voltage becomesmore positive.(D) The cell’s inside is more negative than the outsidearrow_forward
- Saltatory conduction is a term applied to the "jumping" movement of action potentials Multiple Choice a) along the postsynaptic membrane from dendrite to axon hillock. b) along myelinated axons. c) from one neuron to another. d) in two directions at the same time. e) across electrical synapses.arrow_forwardThe presence of an electrical gradient is responsible for both the resting membrane potential and the action potential in the neuron.a. In this case who is responsible for maintaining the electric gradient to produce a potential for the resting membrane?b. Explain what is meant by an electrical gradient in the context of a cell (neuron)!arrow_forwardWhich of the following best describes the electrical state of a neuron at rest? a. The inside of a neuron is more negatively charged than the outside. b. The outside of a neuron is more negatively charged than the inside. c. The inside and the outside of a neuron have the same electrical charge. d. Potassium ions leak into a neuron at rest.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Nervous System - Get to know our nervous system a bit closer, how does it works? | Neurology; Author: FreeMedEducation;https://www.youtube.com/watch?v=6O-0CVAgaEM;License: Standard youtube license