CAMPBELL BIOLOGY IN FOCUS-MOD.MASTERING
3rd Edition
ISBN: 9780135191811
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 37.1, Problem 3CC
WHAT IF? How might increased branching of an axon help coordinate responses to signals communicated by the nervous system?
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Q4.1. The image below shows a neuron's response to a medium-intensity stimulus. Which of the options underneath it correctly
shows a signal for a weaker stimulus?
Time (ms)
60
Time (ms)
Time (ms)
60
Time (ms)
Time ms)
60
Explain in few sentences !! how a neuron can repair itself. What increases the likelihood of repair; what decreases the likelihood of repair? If repair is not possible, what other options are possible to innervate the effector organ?
Q9. If the tip of the axon is on the left, and the receiving neuron is on the right, which direction is a
neurotransmitter molecule that was just released most likely to move?
Left
Right
Either up or down
Either left or right
All directions equally likely
Chapter 37 Solutions
CAMPBELL BIOLOGY IN FOCUS-MOD.MASTERING
Ch. 37.1 - Prob. 1CCCh. 37.1 - Describe the basic pathway of information flow...Ch. 37.1 - WHAT IF? How might increased branching of an axon...Ch. 37.2 - Under what circumstances could ions flow through...Ch. 37.2 - WHAT IF? Suppose a cells membrane potential shifts...Ch. 37.2 - Prob. 3CCCh. 37.3 - How do action potentials and graded potentials...Ch. 37.3 - In multiple sclerosis (from the Greek skleros,...Ch. 37.3 - Prob. 3CCCh. 37.3 - WHAT IF? Suppose a mutation caused gated sodium...
Ch. 37.4 - Prob. 1CCCh. 37.4 - Organophosphate pesticides work by inhibiting...Ch. 37.4 - MAKE CONNECTIONS Name one or more membrane...Ch. 37 - What happens when a resting neuron's membrane...Ch. 37 - Prob. 2TYUCh. 37 - Prob. 3TYUCh. 37 - Why are action potentials usually conducted in one...Ch. 37 - Which of the following is a direct result of...Ch. 37 - Suppose a particular neurotransmitter causes an...Ch. 37 - Prob. 7TYUCh. 37 - Prob. 8TYUCh. 37 - DRAW IT Suppose a researcher inserts a pair of...Ch. 37 - Prob. 10TYUCh. 37 - FOCUS ON EVOLUTION An action potential is an...Ch. 37 - Prob. 12TYUCh. 37 - SYNTHESIZE YOUR KNOWLEDGE The rattlesnake alerts...
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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
- WHAT IF? Suppose you examine two groups of individuals with CNS damage. In one group, the damage hasresulted in a coma (a prolonged state of unconsciousness). In the other group, it has caused paralysis (a loss ofskeletal muscle function throughout the body). Relativeto the position of the midbrain and pons, where is thelikely site of damage in each group? Explainarrow_forwardWHAT IF? Ouabain, a plant substance used in some cultures topoison hunting arrows, disables the sodium-potassium pump.What change in the resting potential would you expect to seeif you treated a neuron with ouabain? Explain.arrow_forwardWatch this video (http://openstaxcollege.org/l/summation) to learn about summation. The process of converting electrical signals to chemical signals and back requires subtle changes that can result in transient increases or decreases in membrane voltage. To cause a lasting change in the target cell, multiple signals are usually added together, or summated. Does spatial summation have to happen all at once, or can the separate signals arrive on the postsynaptic neuron at slightly different times? Explain your answer.arrow_forward
- Q4.7. Why does Na* enter the cell during the action potential? Because the Na* channels are open and only let Na* move from outside to inside Because the action potential pulls positive ions into the cell while Na* and K* channels are open Because Na channels are open and allow Na* ions to move down the length of the axon to produce neurotransmitter at the axon terminal Because Na" channels are open and there is a higher concentration of Na outside of the neuron than insidearrow_forwardConsider the circuit from Q5 (above). We want to add another inhibitory neuron to this circuit to increase the likelihood that neuron D will have an action potential. With which cell (A, B, C or D) should our new inhibitory neuron make a synapse to make it more likely that the post - synaptic neuron will have anaction potential?The diagram below shows a simple neural circuit with three pre - synaptic cells labelled 'A', 'B' and 'C', and a post - synaptic cell labelled 'D ' (see image below). Assume neurons A and B each have outputs of +2 and neuron C has output of -1.arrow_forwardWHAT IF? If all the Ca2+in the fluidsurrounding a neuron were removed,how would this affect the transmission ofinformation within and between neurons?arrow_forward
- Q 15 of 15 How do myelinated axons differ from unmyelinated axons? O Unmyelinated axons travel slower than myelinated axons. Myelinated axons prune neural connections. Myelinated axons travel slower than unmyelinated axons. Unmyelinated axons advance neural connections.arrow_forwardQ5.6. If calcium ions, each of which has a charge of +2 (Ca²+), moved INTO a neuron, and no other ions were moving, what would be TRUE? The area outside the neuron would be become more positively charged. The concentration of Ca²+ inside the cell would decrease. The neuron would become more negative. The neuron would become more positive. Submitarrow_forwardQ5.3. After the rising phase, which ion channel is responsible for action potential returning to its resting Vm, and why? Na+ channels, because positive Na* ions are at higher concentration outside the axon than inside, and so they enter the axon and raise V m Na* channels, because positive Na* ions are at higher concentration inside the axon than outside, and so they leave the axon and raise Im K* channels, because positive K* ions are at higher concentration outside the axon than inside, and so they enter the axon and raise Vm K+ channels, because positive K* ions are at higher concentration inside the axon than outside, and so they leave the axon and lower Vm Submitarrow_forward
- CHAPTER 11: Functional Organization of Nervous Tissue A. Question If an axon has been severed, so that it is no longer connected to its neuron cell body, what will be the effect on the distal and proximal portions of the axon? Explain your predictionarrow_forward- Which type of cell transmits signals to the central nervous system?1- efferent neurons2- interneurons3- motor neurons4- afferent neurons - Sensory transduction involves1- converting a stimulus into a membrane potential2- sending brain instructions to motor neurons3- the central but not the peripheral nervous system4- converting a stimulus into neurotransmitter - When light hits the rods and cones in our eyes1- it alters the shape of a protein called retinal2- it causes Ca+ channels to open3- it causes K+ channels to open4- it causes them to depolarize - In mammals, both hearing and equilibrium involve 1- chemoreceptors2- retinal3- mechanoreceptors4- electromagnetic receptorsarrow_forwardQ4.5. Why do neurons generate an action potential, instead of simply relying on the opening of ion channels near the stimulus site to transmit information? Because without the action potential, changes in Vm at the stimulus site might not reach the axon terminal Because without the action potential, the neuron would not depolarize Because action potentials help the body keep ion concentrations at appropriate levels Because without the action potential, the neuron would not return to resting potential O Oarrow_forward
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