Background - the RMP of a neuron is based on the concentration gradient of K+ ions inside versus outside, and the concentration gradient of Na+ ions inside to outside. A new recreational street drug causes a neuron to lose a significant amount of its intracellular potassium ions (K+). This results in the resting potential of the neuron to be Group of answer choices the same but the threshold potential is higher a trigger for the neuron to divide more negative than before less negative than before the same as before
Added by Donna M.
Step 1
The RMP of a neuron is determined by the difference in concentration of ions, primarily potassium (K+) and sodium (Na+), across the cell membrane. Typically, the inside of the neuron has a higher concentration of K+ and a lower concentration of Na+ compared to the Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 61 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
If the potassium leak channels were suddenly blocked in a resting neuron, what would happen to its resting membrane potential? a) It would become more positive. b) It would become more negative. c) The RMP would be unaffected. d) It would hyperpolarize. All of the following are typical characteristics of neurotransmitters except: a) They are synthesized by a presynaptic neuron. b) They are released in response to stimulation. c) They are released into the bloodstream before reaching the postsynaptic cell. d) They bind to specific receptors on the postsynaptic cell. e) They alter the physiology of the postsynaptic cell.
Adi S.
The concentration gradient of a neuron at rest Brings a neuron to threshold and triggers action potential Increase in membrane potential of cell, more negative, relative to normal resting potential. Maintained by the sodium-potassium pump Reduction (toward 0) of the membrane potential, relative to normal resting potential
John N.
Which of the following is NOT true regarding resting membrane potential? The sodium-potassium pump maintains an unequal distribution of sodium and potassium ions on either side of the plasma membrane. For every three sodium ions that are pumped out of the neuron, two potassium ions are pumped into the neuron. Sodium leaks through the membrane more easily than does potassium. The difference in charge between the outside and inside of the neuron is known as the resting membrane potential. Which of the following is true regarding an action potential? It will only occur if the sum of the graded potentials reaches threshold. It results in a small, localized change in the resting potential in a neuron. It is caused by depolarization of the neuron's plasma membrane. During depolarization, potassium ions enter the cell while sodium ions exit the cell.
Bryan V.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD