Question 19 1 pts For neurotransmitter to be released at an axon terminal in response to the arrival of an action potential, which ion channels are opened? Voltage regulated Calcium channels Votage regulated Magnesium channels Voltage regulated Anion channels Voltage regulated Potassium channels
Added by Alexander W.
Close
Step 1
Step 1: The arrival of an action potential at the axon terminal triggers the opening of voltage-gated calcium channels. Show more…
Show all steps
Your feedback will help us improve your experience
Madhur L and 60 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
Madhur L.
Which of the following is an example of a chemically-gated channel? 1) potassium channels in action potentials 2) sodium channels in action potentials 3) calcium channels in axon terminals 4) cholinergic nicotinic receptor
Breanna O.
Question 29 (2 points) For a neuron with an initial membrane potential at -70 mV, an increase in the movement of potassium ions out of that neuron's cytoplasm would result in depolarization of the neuron, making an action potential more likely. hyperpolarization of the neuron, making an action potential more likely. depolarization of the neuron, making an action potential less likely. hyperpolarization of the neuron, making an action potential less likely. a release of neurotransmitters from the synapse Question 30 (2 points) What is the direct cause of an action potential occurring in a pre-synaptic neuron? the sodium-potassium pump increases activity release of neurotransmitters opening Ca++ channels and the movement of anions opening voltage-gated Na+ channels closing voltage-gated K+ channels Question 31 (2 points) A "resting" motor neuron __________. releases acetylcholine. has a high permeability to sodium ions. is equally permeable to sodium and potassium ions. has a resting potential that is more negative than the "threshold" potential. has a higher concentration of sodium ions on the inside the cell than on the outside.
Lochan U.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD