Electrical Activity Of Neurones

Question 1

Membrane potential is?

Answer 1

Difference in electrical potential at either side of the membrane

Question 2

What is current

Answer 2

Flow of electrical potential across the membrane

Question 3

Ohm’s law?

Answer 3

Assuming the resistance is constant, v is directly proportional to I

Question 4

What are the types of channel proteins

Answer 4

Leaky
Voltage gates
Ligand gated channels

Question 5

What is the intracellular concentration of sodium

Answer 5

15mm

150mmm

Question 6

Extracellular concentration if sodium and reduction

Answer 6

145mM

4mM

Question 7

What is the value of the resting potential

Answer 7

-70mV

Question 8

Intracellular fluid had a … charge relative to the extra cellular fluid

Answer 8

Negative

Question 9

What is an electrical gradient?

Answer 9

Difference in voltage on either side of the membrane

Question 10

Chemical gradient?

Answer 10

Difference in molar concentration