Purchase Solution

the sign and the magnitude of the change in the resting potential

Not what you're looking for?

Ask Custom Question

In 1983, a young boy named Jimmy Tontlewicz fell through a hole in the ice on a lake in Minnesota. When the rescue team pulled him out of the water 20 min later, his body temperature had fallen from the normal 37 C to 29 C. Calculate the sign and the magnitude of the change in the resting potential of Jimmyâ??s neurons if the ion concentrations inside and outside his axons and ion conductances are given in the table. Give your answer in mV.

Table given:
Ion g (S cm-2) Conc. inside (mM) Conc. out (mM)
Na+ 0.12 x 10-6 60 440
K+ 2.6 x 10-6 390 15
Cl- 1.3 x 10-6 65 510

Purchase this Solution
Solution Summary

This solution reiterates the sign and the magnitude of the change in the resting potential of this case if the ion concentrations inside and outside his axons and ion conductances are given in the table.

Purchase this Solution
Free BrainMass Quizzes
The Plant Body

This quiz will test your knowledge of the anatomy of a common plant.

Birth 101

Do you know about childbirth? Find out with this quiz.

How Much Do You Know About Genetic Inheritance?

Most of us studied the basics of dominant and recessive genes at some point. However, genetics are much more complicated than this. How far beyond the basics does your knowledge go?

Feeding Babies

Do you know the science behind feeding babies? Test your knowledge with this quiz.

Basic Concepts in Neuroscience

This quiz provides a review of the basic concepts in neuroscience.

View More Free Quizzes
Related BrainMass Solutions

  • Nervous System

    The minimum change in membrane potential needed to achieve an action potential is the (17) _____ value. The cytoplasm next to the plasma membrane of a neuron at rest is more (18) ____ than the interstitial fluid just outside the membrane.

  • charge and capacitance of the cylindrical capacitor

    Find the charge (magnitude & sign) on both conductors. The capacitance So the charge on the conductor is Since the inner conductor has higher potential, so the change is .

  • Electric Potential Difference Magnitude and Sign

    The potential difference between the two locations is Vb-Va= 45.0 V. What is the magnitude and sign of the charge? Please see attached file. The solution calculates the magnitude and sign of the charge.

  • Sign convention for power in an electrical circuit

    Sign convention for currents at a junction : Currents entering the junction are taken as positive and those leaving negative. Sign convention for potential across devices in a loop : Potential rise is taken as positive and drop as negative.

  • What is responsible for hyperpolarization?

    Remember that at the resting state there is high potassium inside the cell and high sodium outside the cell. If the potassium channels stay open then the high level of potassium will leak out of the cell.

  • Measuring Electrostatic Potential Energy

    502277 Measuring Electrostatic Potential Energy Two particles with charges q1 and q2 are separated by distance d. Rank these scenarios according to the magnitude of the electrostatic (coulombic) potential energy. Ignore sign.

  • Resting membrane potential maintenance

    To keep things simple, there are two basic factors that contribute to the resting membrane potential and the resting distribution of ions. 1. Extracellular fluid is rich in NaCl. That means that there is lots of Na+ and Cl- outside the cell.

  • (ref7) Binary Sign Magnitude

    Representation of +29 in 2's complement notation is 00011101. To get the representation of -29 in 2's complement notation, we take 2's complement of above binary string and get 11100010 + 1 = 11100011.

  • Four charges are placed at the corners of a square, where q is positive

    If two diagonal charges have the same magnitude and sign, then the electric field at the center due to these two charges have equal magnitude and opposite directions. Their resultant is, therefore, zero.

View More Related Solutions