Question

What could cause a graded potential that is a hyperpolarization? decreasing membrane permeability to K+ increasing...

What could cause a graded potential that is a hyperpolarization?

decreasing membrane permeability to K+

increasing membrane permeability to Ca2+

increasing membrane permeability to Na+

increasing membrane permeability to K+

An IPSP (inhibitory post-synaptic potential) occurs when a membrane becomes more permeable to ____.

ATP

neurotransmitters

sodium ions

potassium ions

Science   Biology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Q1. Increasing membrane permeability to K+

The membrane is hyperpolarized at the end of the Action Potential as the voltage gated potassium channels will increase the permeability to K+. The opening of channels that allows positive ions (Eg: K+ ions) flow out of the cell causes hyperpolarization.

Q2. Potassium ions

ISPS is the response of a neurotransmitter hyperpolarizing the postsynaptic membrane, which is caused by the flow of negatively charged ions into the postsynaptic cell ( by K+ rushing out or Cl- flowing in).

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
Q1. In order for a neuron to move from the absolute to the relative refractory period,...
Q1. In order for a neuron to move from the absolute to the relative refractory period, a majority of that neuron's sodium channels must have their: Select one: a) inactivation gates open b) activation gates closed c) inactivation gates closed d) activation gates open and inactivation gates closed Q2. Which of the following is NOT true of graded potentials? Select one: a) They are produced after the binding of neurotransmitter to receptor b) they will decrease in magnitude as the...
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...
An inhibitory neurotransmitter may cause the movement of which ion across the membrane? a) Na+ b)...
An inhibitory neurotransmitter may cause the movement of which ion across the membrane? a) Na+ b) Mg2+ c) K+ d) Ca2+ Excitatory neurotransmitters produce which types of electrical responses in the postsynaptic neuron? a)Hyperpolarizations b)EPSPs c)IPSPs d)Threshold level inhibitions Neurotransmitters induce membrane potential changes: a) by opening voltage-gated Na+ channels on the postsynaptic axon hillock. b) on the presynaptic cell body. c) by opening mechanically-gated Mg2+ channels on the postsynaptic axon. d) on the postsynaptic dendrites and cell body
The standard free energy that is required for the sodium-potassium ATPase to pump two K+ ions...
The standard free energy that is required for the sodium-potassium ATPase to pump two K+ ions into the cell and three Na+ ions out is +43.8 kJ/mol but the standard free energy change of hydrolysis of ATP is only -32 kJ/mol. This apparent imbalance of free energy can be accounted for because: A) the movement of Na+ ions is down the concentration gradient . B) the movement of K+ ions is down the concentration gradient. C) the free energy provided...
Massive (and unfortunate) crush injuries present multiple problems for doctors in the emergency department- not only...
Massive (and unfortunate) crush injuries present multiple problems for doctors in the emergency department- not only must they treat the injury, but there is also a distinct chance the patient’s heart will stop. This is due to the sudden acute hyperkalemia resulting for intracellular potassium stores in skeletal muscle cells leaking out through the damaged cell membranes. How would this sudden increase in ECF potassium affect the heart? Group of answer choices Increased ECF K+ concentrations would hyperpolarise cardiac myocytes...
2. Under physiological conditions, the Na+-K+ pump transports sodium and potassium across the membrane through the...
2. Under physiological conditions, the Na+-K+ pump transports sodium and potassium across the membrane through the hydrolysis of ATP. This occurs in a sequence of steps. A. (5pts) Beginning with the START step, put the other steps a-e (currently listed in random order) of the Na+-K+ pump’s mechanism in order to complete a full cycle of transport. START – The protein is phosphorylated open to the extracellular side, and contains 2 K+ ions. a. ATP hydrolysis, protein phosphorylation, and ADP...
QUESTION 1 The autonomic nervous system is mainly controlled by the_____. Thalamus Hypothalamus Cerebellum Precentral gyrus...
QUESTION 1 The autonomic nervous system is mainly controlled by the_____. Thalamus Hypothalamus Cerebellum Precentral gyrus QUESTION 2 "A patient is admitted to the rehabilitation unit five days after having a stroke. The nurse assesses his muscle strength and determines that he has right-sided weakness. Based on this assessment data, what part of the brain was injured?" The precentral gyrus on the right side of the brain The precentral gyrus on the left side of the brain The temporal lobe...
7. Which of the following ion(s) is in highest concentration outside the neuron cell membrane in...
7. Which of the following ion(s) is in highest concentration outside the neuron cell membrane in a resting state? a. Chloride (Cl) and potassium (K) b. Potassium (K) only c. Magnesium (Mg2) d. Chloride (Cl) and sodium (Na) e. Nitric oxide (NO) 8. A neurotransmitter may be described as “excitatory” (leads to depolarization) or “inhibitory” (no change or hyperpolarization). Which of the following determines the action of the neurotransmitter? a. The type of charges (or¨)on the neurotransmitter b. The type...
Cholera and other diarrheal diseases cause nearly 2 billion cases of diarrhea annually. Cholera toxin and...
Cholera and other diarrheal diseases cause nearly 2 billion cases of diarrhea annually. Cholera toxin and other bacterial toxins cause the intestine to secrete fluid into the lumen of the gut, depleting the extracellular fluid (ECF) volume. If fluid loss is not matched with fluid intake (law of mass balance), the result is severe dehydration, circulatory collapse, and even death. Drinking a rehydration solution is the most rapid and effective way to replace the large volumes of water lost by...
A 25-year-old preschool teacher, Sandy Thompson, has not been feeling like herself lately. She has been...
A 25-year-old preschool teacher, Sandy Thompson, has not been feeling like herself lately. She has been feeling quite tired and her co-workers have commented on her droopy eyelids. Additionally, she is experiencing weakness in her arms and legs, has difficulty talking clearly and even her students’ parents have been concerned that Sandy hasn’t been looking very happy at work. One day at lunch, Sandy started to choke on her food, causing one of her coworkers to perform the Heimlich maneuver...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT