Question

drag the items from the bottom to the slots on the right.

resting membrane potential
depolarization starts at ___
repolarization starts at ___
na+ moves into the cell when ___ starts
k+ moves out of the cell when ___ starts
na+/k+ pumps are found only at ___

-70mv
repo
node
+30mv
depo
-55mv

Explanation:

Identify the matching pairs

We match each physiological statement on the left with its corresponding card from the bottom pile:

1. Resting membrane potential: The standard resting potential of a typical neuron is \(-70\text{ mV}\).
2. Depolarization starts at: Depolarization is triggered when the membrane potential reaches the threshold of \(-55\text{ mV}\).
3. Repolarization starts at: Repolarization begins after the peak of action potential, which is around \(+30\text{ mV}\).
4. \(Na^+\) moves into the cell when \_\_\_\_\_ starts: Sodium ions rapidly enter the cell during depolarization ("Depo").
5. \(K^+\) moves out of the cell when \_\_\_\_\_ starts: Potassium ions leave the cell during repolarization ("Repo").
6. \(Na^+/K^+\) pumps are found only at \_\_\_\_\_: In myelinated axons, these active transport pumps are concentrated at the Nodes of Ranvier ("Nodes").

Answer:

No.	Statement	Match
2	Depolarization starts at \_\_\_	\(-55\text{ mV}\)
3	Repolarization starts at \_\_\_	\(+30\text{ mV}\)
4	\(Na^+\) moves into the cell when \_\_\_\_\_ starts	Depo
5	\(K^+\) moves out of the cell when \_\_\_\_\_ starts	Repo
6	\(Na^+/K^+\) pumps are found only at \_\_\_\_\_	Nodes