EXCITABLE TISSUES: Introduction

QUESTION 1

If you measured the difference in electrical charge between your left and right hands this would be known as?

QUESTION 2

If you measured the difference in electrical charge between the inside and outside of an epithelial cell this would be known as?

QUESTION 3

If the leads of a voltmeter were connected to the opposite ends of a small battery and read 0.025 volts, how many millivolts (mV) would this be?

QUESTION 4

Sodium is an example of which of the following?

QUESTION 5

With reference to the diagram opposite, if the blue ion channel opened, making the membrane selectively permeable to X^-, which of the following statements would be TRUE?
1. Anions would enter the cell.
2. Cations would leave the cell.
3. The membrane potential would become more negative.

QUESTION 6

With reference to the diagram opposite, if the blue ion channel was selectively permeable to Cl^- the equilibrium potential for Cl^- would be?