HyeRi- week1problems

HyeRi- week1problems - HyeRi Kim (hyk010@ucsd.edu) OH: Fri...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
HyeRi Kim ( hyk010@ucsd.edu ) OH: Fri 1-2:50pm Stein Room 128 Week 1 problems 1. In a common bipedal primate, whose body temperature is 37 Celsius, the ionic concentrations inside and outside a typical nerve cell are shown below: Ions Inside Outside Na+ 10mM 150mM K+ 112mM 3mM Cl- 4mM 88mM a) Calculate the equilibrium potentials for each ions b) What is the overall membrane potential for this nerve cell? (P K =2, P Na =1, P Cl =0) c) What is the most positive voltage to which an action potential could go in this organism? d) What is the most negative voltage to which an action potential could go in this organism? e) If the external Na+ concentration were lowered to half of its original value, what effect would it have on the action potential? f) If the external K+ concentration rose to 20mM, what effect would it have on the K+ equilibrium potential, and hence on the resting potential? g) GABA opens up Cl- selective channel in many nerve cells. Some of the neurons in this animal rest at -70mV, and GABA opens Cl- selective channels in these
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/10/2011 for the course BIPN 100 taught by Professor French during the Winter '07 term at UCSD.

Page1 / 2

HyeRi- week1problems - HyeRi Kim (hyk010@ucsd.edu) OH: Fri...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online