Question

In lecture, we drew and labeled a graph showing change in membrane potential as an axon...

In lecture, we drew and labeled a graph showing change in membrane potential as an axon fires an action potential.

a. In the space below, draw what the graph would look like if a neurotoxin that kept the Na+-gated channels open was administered to a nerve cell.

b. What do you think would happen to the K+-gated channels in the situation mentioned in the question above? Explain why.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
I've already tried the one that says incorrect. 1. An EPSP (i.e., Excitatory PostSynaptic Potential) causes...
I've already tried the one that says incorrect. 1. An EPSP (i.e., Excitatory PostSynaptic Potential) causes ___. - an action potential to move down the axon - K+ channels to open and the outflow of K+ from the cell - Na+ channels to open and the inflow of Na+ into the cell (incorrect) - a change in the membrane potential that makes the cell less likely to produce an action potential 2. Which type of voltage-gated channels are only present...
Refer to the figure showing the conduction of an action potential traveling from left to right...
Refer to the figure showing the conduction of an action potential traveling from left to right in a myelinated axon. Note the action potential at node 2. Which statement about section 2 of the axon is true? a. A loss of signal will occur as the action potential travels to each adjacent node. b. The speed of the action potential in this axon depends mostly on its diameter. c. Na+ channels will inactivate at this node and enter a refractory...
18. Assume the resting membrane potential of nerve cell to be -70 mV. If five EPSP’s...
18. Assume the resting membrane potential of nerve cell to be -70 mV. If five EPSP’s (each with a voltage of 2 mV) and three IPSP’s (each with a voltage of 1 mV) arise in a nerve cell at the same time, what would the resulting graded potential be? a. In the above question, if the resulting graded potential reaches threshold, what channels would open? b. When an action potential reaches an axon terminal, what channels would open?
Please No Explanation just ANSWER A,b,c,etc! QUESTION 24 Fifty neurons release excitatory neurotransmitters onto the dendrites...
Please No Explanation just ANSWER A,b,c,etc! QUESTION 24 Fifty neurons release excitatory neurotransmitters onto the dendrites and body of neuron “A.” Neuron A reaches threshold and fires an action potential. This is an example of saltatory summation. continuous summation. spatial summation. temporal summation. Which of the following terms does not belong with the others? sodium IPSP excitatory depolarize 2 points    QUESTION 27 Which one of the following terms does not belong with the others? graded potential depolarizing phase action...
Put these steps in neuromuscular junction synaptic transmission and excitation-contraction coupling in chronological order. (Type the...
Put these steps in neuromuscular junction synaptic transmission and excitation-contraction coupling in chronological order. (Type the letters in the appropriate order with no spaces between them). A. Ryanodine receptors open B. Voltage-gated Na+ channels open in the muscle cell membrane near the neuromuscular junction C. Tropomyosin rotates into the groove of the thin filament (out of the way of the myosin binding site) D. Depolarization of motoneuron axon terminal E. Ca2+ dissociates from troponin F. [Ca2+] rises in the muscle...
1. At resting membrane potential in a neuron, which is true of the forces responsible for...
1. At resting membrane potential in a neuron, which is true of the forces responsible for the movement of potassium (directed into or out of the cell)? Select one: a. The chemical gradient is outward while the electrical gradient is inward b. Chemical gradient is inward while the electrical gradient is outward c. Chemical and electrical gradients are directed outward d. Chemical and electrical gradients are directed inward 2. Multiple sclerosis is a devastating disease because it... Select one: a....
Using the model proposed by Lafley and Charan, analyze how Apigee was able to drive innovation....
Using the model proposed by Lafley and Charan, analyze how Apigee was able to drive innovation. case:    W17400 APIGEE: PEOPLE MANAGEMENT PRACTICES AND THE CHALLENGE OF GROWTH Ranjeet Nambudiri, S. Ramnarayan, and Catherine Xavier wrote this case solely to provide material for class discussion. The authors do not intend to illustrate either effective or ineffective handling of a managerial situation. The authors may have disguised certain names and other identifying information to protect confidentiality. This publication may not be...
What tools could AA leaders have used to increase their awareness of internal and external issues?...
What tools could AA leaders have used to increase their awareness of internal and external issues? ???ALASKA AIRLINES: NAVIGATING CHANGE In the autumn of 2007, Alaska Airlines executives adjourned at the end of a long and stressful day in the midst of a multi-day strategic planning session. Most headed outside to relax, unwind and enjoy a bonfire on the shore of Semiahmoo Spit, outside the meeting venue in Blaine, a seaport town in northwest Washington state. Meanwhile, several members of...