If You Were to Insert a Microelectrode Through the Cell

question 21

Multiple Choice

If you were to insert a microelectrode through the cell membrane of a neuron, you would be able to demonstrate that

• A) the region inside the cell membrane contains more positive ions than the region outside the membrane.
• B) the region inside the cell membrane contains more negative ions than the region outside the membrane.
• C) there is a greater concentration of potassium ions outside the cell membrane than inside the membrane.
• D) there is a greater concentration of potassium ions inside the cell membrane than outside the membrane.

---

Definitions:

Amygdala

A subcortical forebrain structure; it serves a vital role in our learning to associate things with emotional responses and in processing emotional information.

Fearful Responses

Emotional and physiological reactions triggered by perceived threats or dangers, often involving increased heart rate and adrenaline production.

Hippocampus

A major component of the brains of humans and other vertebrates, playing critical roles in the consolidation of information from short-term memory to long-term memory and in spatial memory navigation.

London Taxi Drivers

refers to a study population often cited in psychological and neuroscientific research that has revealed notable increases in the size of the hippocampus associated with the complex navigational skills required by their profession.