Discuss the events that occur at either depolarization or repolarization of an action potential in a...
Discuss the events that occur at either depolarization or repolarization of an action potential in a muscle cell.
Homework Answers
In muscle cells the depolarization or repolarization phase of the action potentials is caused by an opening of sodium channels.this is also occurs in non pace maker cells calcium Ions are involved in the intial depolarization phase of the action potential.
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Discuss the events that occur at either depolarization
or repolarization of an action potential in a...
D SCAN MATCHING 1. Depolarization 2. Action potential 3. Threshold 4. Repolarization 5. Relative refractory period...
D SCAN MATCHING 1. Depolarization 2. Action potential 3. Threshold 4. Repolarization 5. Relative refractory period 6. Absolute refractory period 7. Resting membrane potential 8. Continuous conduction 9. Saltatory conduction Choices A. a cell whose internal environment has an electrical charge equal to its external environment B. the process of a cell becoming positively charged C. the process of a cell becoming negatively charged D. an electrochemical change in the potential across a membrane that causes an electrical signal to...
Identify the phases of an action potential. +30 Answer Bank undershoot repolarization phase depolarization phase Membrane...
Identify the phases of an action potential. +30 Answer Bank undershoot repolarization phase depolarization phase Membrane potential (mV) Resting potential Threshold potential - - - - - - - - - - Time (ms)
11. During an action potential A. Na+ efflux causes depolarization. B. K+ influx causes repolarization. C....
11. During an action potential A. Na+ efflux causes depolarization. B. K+ influx causes repolarization. C. Na+ influx causes depolarization. D. K+ influx causes
Which of the following events does not occur during the depolarization phase of a skeletal muscle...
Which of the following events does not occur during the depolarization phase of a skeletal muscle action potential? A. T-tubules depolarize B. troponin changes shape, moving tropomyosin off of actin's myosin binding sites C. Ca++ is released from the sarcoplasmic reticulum D. Ca++ channels in the axon terminal open
Which statements describe the action potential in cardiomyocytes (heart muscle cells)? Depolarization stimulates voltage-gated, slow calcium...
Which statements describe the action potential in cardiomyocytes (heart muscle cells)? Depolarization stimulates voltage-gated, slow calcium channels to open. The absolute refractory period can last for about 200 ms. Rapid sodium influx causes the membrane to rapidly depolarize. Repolarization occurs immediately after the initial depolarization.
1. Describe what resting potential is and how neurons maintain it. 2. Explain the events that...
1. Describe what resting potential is and how neurons maintain it. 2. Explain the events that occur during an action potential, being sure to describe what causes depolarization and repolarization. How do Schwann cells (glial cells) aid in the movement of depolarization along an axon?
Ldlicu upon 16 What is the difference between a graded potential and an action potential? Where...
Ldlicu upon 16 What is the difference between a graded potential and an action potential? Where would a praded potential occur in the neuron? An action potential? 16. The most widely used inhibitory neurotransmitter is This neurotransmitter opens up ion channels in the postsynaptic membrane. Ions rush (in/out) and bring the cell (closer to/further from) threshold level. 17. Label the following diagram with these terms: depolarization, repolarization, hyperpolarization, Na gates open, Na' gates closed, K gates open, K' gates closed,...
The resting membrane potential of a neuronal axon is -70 mV. When an action potential is...
The resting membrane potential of a neuronal axon is -70 mV. When an action potential is triggered, Na+ ions move into the axon, which reverses the voltage, bringing it towards 0 mV. Which of the following is the correct term for this sequence of events? a. Repolarization b. Hyperpolarization c. Depolarization d. Hypopolarization e. Isopolarization
please help me Directions: Use graph of change in membrane potential during a typical action potential...
please help me
Directions: Use graph of change in membrane potential during a typical action potential in a nerve cell below to answer questions 30-32 +50 Action potential 0- potential (mv) Membran 50 - Threshold o 5 Resting potential -100 Time 32. On the graph, what is taking place at #2? A. Repolarization B. Hyperpolarization C. Depolarization D. None of the above 33. On the graph, what is taking place at #4? A. Repolarization B. Hyperpolarization C. Depolarization D. None...
The depolarization phase of the action potential of skeletal muscle cells ends when the ? a....
The depolarization phase of the action potential of skeletal muscle cells ends when the ? a. Na+ activation gates close. B. Na+ activation gates open. c. Na+ inactivation gates close. d. Na+ inactivation gates open. e. K+ voltage gated channels open. What is the correct choice.
D SCAN MATCHING 1. Depolarization 2. Action potential 3. Threshold 4. Repolarization 5. Relative refractory period 6. Absolute refractory period 7. Resting membrane potential 8. Continuous conduction 9. Saltatory conduction Choices A. a cell whose internal environment has an electrical charge equal to its external environment B. the process of a cell becoming positively charged C. the process of a cell becoming negatively charged D. an electrochemical change in the potential across a membrane that causes an electrical signal to...
Identify the phases of an action potential. +30 Answer Bank undershoot repolarization phase depolarization phase Membrane potential (mV) Resting potential Threshold potential - - - - - - - - - - Time (ms)
11. During an action potential A. Na+ efflux causes depolarization. B. K+ influx causes repolarization. C. Na+ influx causes depolarization. D. K+ influx causes
Which statements describe the action potential in cardiomyocytes (heart muscle cells)? Depolarization stimulates voltage-gated, slow calcium channels to open. The absolute refractory period can last for about 200 ms. Rapid sodium influx causes the membrane to rapidly depolarize. Repolarization occurs immediately after the initial depolarization.
Ldlicu upon 16 What is the difference between a graded potential and an action potential? Where would a praded potential occur in the neuron? An action potential? 16. The most widely used inhibitory neurotransmitter is This neurotransmitter opens up ion channels in the postsynaptic membrane. Ions rush (in/out) and bring the cell (closer to/further from) threshold level. 17. Label the following diagram with these terms: depolarization, repolarization, hyperpolarization, Na gates open, Na' gates closed, K gates open, K' gates closed,...
please help me
Directions: Use graph of change in membrane potential during a typical action potential in a nerve cell below to answer questions 30-32 +50 Action potential 0- potential (mv) Membran 50 - Threshold o 5 Resting potential -100 Time 32. On the graph, what is taking place at #2? A. Repolarization B. Hyperpolarization C. Depolarization D. None of the above 33. On the graph, what is taking place at #4? A. Repolarization B. Hyperpolarization C. Depolarization D. None...
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