Oligodendrocytes Are Cells in the Brain That Produce Myelin in the Central

question 41

Multiple Choice

Oligodendrocytes are cells in the brain that produce myelin in the central nervous system. Myelin regulatory factor (MyRF) is a transcription factor that is required by oligodendrocytes in order to produce myelin. Researchers investigated the importance of MyRF by having mice learn how to run on complex wheels (there were many gaps in the wheel thus making it difficult to run on-see graph below) .

-Researchers created a genetic strain of mice that were lacking both genes for MyRF. What is the most likely effect that this would have on the mice?

• A) decreased rate of signal propagation via axons
• B) increased flow of ions through voltage-gated sodium channels
• C) decreased flow of ions through voltage-gated potassium channels
• D) increased number of dendrites on neuron cell bodies

---

Definitions:

Fisher

A term that might refer to a person engaged in fishing, or in an academic context, could relate to Ronald Fisher, a key figure in the development of statistical methods.

Outstanding Narration

Exceptionally skilled storytelling or recounting of events in a compelling and engaging manner.

Fidelity

Refers to the degree of accuracy or loyalty to an original or a standard.

Twitter

A social media platform that allows users to post short messages, known as tweets, to share their thoughts, news, or information.