The figure below may help in answering some of the questions.1. What ions are flowing (and in which direction) both during the rising phaseand the falling phase of the action potential?2. What are the values of both the 'y' (vertical) axis and the 'x' (horizontal) axis.3. If extracellular levels of K+ rose (a condition called hyperkalemia), how wouldthat affect the resting membrane potential?3

The neurons are the cells of nervous system that is responsible for generation and transmission of…

Answered: The figure below may help in answering…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

See similar textbooks

Similar questions

Answer questions 1-5 about a cell that has: [ECF) of Na" = 142 mM, and K* = 4.6 mM (ICF] af Na* = 9 mM and K* = 155 mM The membrane has eight (8) times more K leak channels than Na*leak channels. 1. What is the resting membrane potential for this cell? 2. What would the resting membrane potential be if a drug was administered that blacked Na" leak channels? 3. To what would the membrane potential change if a stimulus apened an amount of Na* gated channels that was 500 times greater than the number af Na* leak channels? 4. What would be the direction of the Na* electrochemical gradient if the membrane potential were 80 mV? Into cell Out of cell 5. How much mare permeable would the above cell be to patassium than sodium if the measured resting membrane potential was -68 mv?
Give typed full explanation
The negatively charged intracellular environment and resulting resting membranepotential of neurons and muscle cells fundamentally develops because of:A. the presence of a high extracellular potassium concentration.B. the presence of negatively charged intracellular proteins.C. the high electron concentration found in the extracellular fluidsD. the presence of voltage-gated-sodium channells
Our patient cannot remove potassium from their extracellular fluid. This is known as hyperkalemia. Describehow the two things above, the resting membrane potential and the action potential, would be different in someone with hyperkalemia.
33 Explain how the transmission of an action potential would be impacted if voltage-gated calcium channels could not open. In your answer, explain the usual process ofhow an action potential is transmitted from one neuron to the next neuron.Answer in a sentence format.
There are differences in Na+, K+, and Cl- ion concentrations across the membrane. Knowing that ions like to flow down their respective concentration gradients explain how the movement of Cl- and K+ ions can result in membrane hyperpolarization.
4) A neuron with ionic gradients described in the table below receives a synaptic input that opens channels that conduct Na. If the resting membrane potential is –60 mV and the change in conductance is 20 nS, what is the magnitude of the Na current (INa)? Concentration (mM) Ion Extracellular Intracellular Na+ 150 8 K+ 3.5 150
3. Explain all the electrical and mechanical events which occur during each measured wave, segment andinterval. An electrical event would be membrane polarization: depolarization, repolarization, restingmembrane potential, hyperpolarization etc; mechanical events include blood flow, open or closed valves,heart sounds, contraction, relaxation, pressure changes, etc. An example of a complete answer for the P waveis given below. Feel free to use your lecture and/or textbook as a reference to make the connections betweenECG and the cardiac cycle. This is a great way to review for the exam and apply what you are learning. P Wave – During the P wave, depolarization is sweeping from the SA node throughout both atria (electricalevent). This leads to the beginning of atrial contraction (mechanical event).PR Interval -P-R Segment –QRS Complex –Q-T Interval –S-T Segment –T Wave –T-P Segment –R-R Interval –
Place the steps of the action potential in order. 3. a brief reversal of membrane potential that travels along the axon mechanism that restores the resting membrane voltage and intracellular ionic concentrations 2.C reversal of the resting potential due to an influx of sodium ions 1. period during which potassium ions are diffusing out of the neuron because of a change in membrane permeability
Fill in the diagram, your illustration should demonstrate for each phase of the AP: 1. The relative concentration of K and Na 2. The relative voltage across the membrane 3. Any movement across the membrane of K and NA 4. The three kinds of channels in the membrane, and their state (open or closed) 5. Finally, indicate on the graph of the AP which phases correspond to hyper- polarization and which phases correspond to de- polarization Outside Outside Inside Inside Outside Inside Outside 1 Outside Inside Inside
Answer the following questions about the resting membrane potential of cells (in other words, the electrochemical gradient of a cell at rest). 1. In regards to Na+ and K+, what is the ionic gradient of these ions across the plasma membrane? 2. What is the electrical charge just inside the plasma membrane and just outside the plasma membrane of a cell at rest? 3. What maintains this electrochemical gradient?
Indicate the specific events that are occurring at 1,2,3 and 4. B. At which area of the graph are sodium ions rapidly entering the neuron. C. At which area of the graph are potassium ions rapidly leaving the neuron? D. At which area of the graph is the sodium ion concentration higher outside than inside the neuron? Explain how a membrane that is said to be "resting" can continually use energy to transport ions. Action Potential Membrane potential (mV) +20+ 0- 20- -40- -60- -80 0 1 m 6 Time (milliseconds)

SEE MORE QUESTIONS

Recommended textbooks for you

Human Anatomy & Physiology (11th Edition)

Anatomy and Physiology

ISBN:

9780134580999

Author:

Elaine N. Marieb, Katja N. Hoehn

Publisher:

PEARSON

Anatomy & Physiology

Anatomy and Physiology

ISBN:

9781259398629

Author:

McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter

Publisher:

Mcgraw Hill Education,

Human Anatomy

Anatomy and Physiology

ISBN:

9780135168059

Author:

Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon

Publisher:

Pearson Education, Inc.,

Human Anatomy & Physiology (11th Edition)

Anatomy and Physiology

ISBN:

9780134580999

Author:

Elaine N. Marieb, Katja N. Hoehn

Publisher:

PEARSON

Anatomy & Physiology

Anatomy and Physiology

ISBN:

9781259398629

Author:

McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter

Publisher:

Mcgraw Hill Education,

Human Anatomy

Anatomy and Physiology

ISBN:

9780135168059

Author:

Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon

Publisher:

Pearson Education, Inc.,

Anatomy & Physiology: An Integrative Approach

Anatomy and Physiology

ISBN:

9780078024283

Author:

Michael McKinley Dr., Valerie O'Loughlin, Theresa Bidle

Publisher:

McGraw-Hill Education

Human Anatomy & Physiology (Marieb, Human Anatomy…

Anatomy and Physiology

ISBN:

9780321927040

Author:

Elaine N. Marieb, Katja Hoehn

Publisher:

PEARSON

SEE MORE TEXTBOOKS