Question

What is the correct sequence of events that occur in the neuron 1.)The membrane is depolarized...

What is the correct sequence of events that occur in the neuron
1.)The membrane is depolarized
2.)sodium channels opens and sodium ions diffuse inward
3.)The membrane becomes repolarized
4.)Potassium channels open and potassium ions diffuse outward
Science   Anatomy-And-Physiology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
1. If a sensory neuron is voltage-clamped at -70 millivolts in normal saline (so all ion...
1. If a sensory neuron is voltage-clamped at -70 millivolts in normal saline (so all ion channels can work) you would expect to see: a)relatively little current flow, since this is near the resting potential, where the membrane potential is mostly balancing the concentration gradients for the various ions b)a large positive current inward as potassium enters the cell c)a large positive current inward as sodium enters the cell d)a large positive current outward as sodium leaves the cell 2....
What happens to sodium channels and potassium channels during repolarization of a neuron? A. both potassium...
What happens to sodium channels and potassium channels during repolarization of a neuron? A. both potassium channels and sodium channels remain closed B. the sodium channels close, followed by opening of the potassium channels C. both sodium channels and potassium channels remain closed D. the sodium channels open, but the potassium channels remain closed E. both potassium channels and sodium channels remain open The above repolarization of a neuron will result in which of the following ionic currents? A. a...
Order the following events that occur in the synapse from 1-7 1. Ion channels close 2....
Order the following events that occur in the synapse from 1-7 1. Ion channels close 2. Neurotransmitters are taken back up out of the synapse or degraded by enzymes in the cleft 3. Ion channels open to stimulate the action potential in the next neuron 4. Signal arrives at the synaptic terminals 5. Influx of Calcium ions 6. Synaptic vesicles fuse to the membrane and release neurotransmitters into the synapse 7. Neurotransmitters bind to ion channels on the dendrites on...
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....
Question 4 (3 pts) You are patch-clamping a cell. While holding the neuron at different membrane...
Question 4 (3 pts) You are patch-clamping a cell. While holding the neuron at different membrane potentials, you observed the current recordings below. (1 pt) How many channels does your patch likely contain? (2 pt) Given the recordings above, what is the reversal potential for the channel? Explain your reasoning in 1 sentence. b.(2 pt) Is there any net flow of ions at the resting potential in part ‘b’ above? Why or why not? c.(2 pt) You discover that there...
ORDERING: 1. Number these in the proper sequence as they occur through a full action potential...
ORDERING: 1. Number these in the proper sequence as they occur through a full action potential cycle beginning with the cell at -70mV. ___ action potential ___ depolarization ___ hyperpolarization ___ threshold ___ resting potential ___ polarization 2. Number these in the proper sequence as they occur through a full long-term potentiation cycle beginning with the next thing that would occur after the neurotransmitter has been released into the synapse. (6 points) ___ calcium activates second messenger pathways ___ cell...
Muscular System: Neuromuscular Junction 1. Synaptic vesicles in the axon terminal of a motor neuron contain...
Muscular System: Neuromuscular Junction 1. Synaptic vesicles in the axon terminal of a motor neuron contain what neurotransmitter? _________________________ 2. Match the following three terms with their definitions: 1. Terminal cisternae 2. T tubules 3. Sarcolemma ____ plasma membrane of muscle cell ____ part of sarcolemma—carries action potential ____ part of sarcoplasmic reticulum—stores calcium ions 3. An action potential in the axon terminal of a motor neuron opens what type of ion channels? _________________________ 4. By what means of membrane...
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...
Draw & Label central events during an Action Potential. Be sure to label: 1. Voltage-gated sodium...
Draw & Label central events during an Action Potential. Be sure to label: 1. Voltage-gated sodium channels open, inactivated, closed 2. ENA reached 3. KVs open and closed 4. graded potential and resting membrane potential reached 5. Depolarization and Repolarization 5. action potential threshold
Place the following events in the correct order they occur during excitation-contraction coupling in skeletal muscle:...
Place the following events in the correct order they occur during excitation-contraction coupling in skeletal muscle: Myosin forms a tight bond with actin and undergoes the ‘power stroke’. The troponin/tropomyosin complex shifts, exposing the myosin binding sites on the actin filament. Ca2+ binds to troponin. Ca2+ moves out of the sarcoplasmic reticulum (called a “calcium spark”). An action potential in the alpha motor neuron leads to the release of neurotransmitter at the neuromuscular junction. Nicotinic receptors on the motor end...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT