A Researcher Interested in Patterning of the Early Neural Tube

question 14

Multiple Choice

A researcher interested in patterning of the early neural tube identifies a new secreted factor expressed in the isthmus signaling center.Assuming that the newly identified factor plays a role in patterning,which axis of the developing neural tube would you expect to be perturbed if this factor is inactivated?

• A) Cranial-caudal
• B) Dorsal-ventral
• C) Medial-lateral
• D) Right-left

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Definitions:

Positive Symptoms

Symptoms that involve an excess or distortion of normal functions, such as hallucinations or delusions, typically associated with schizophrenia.

Schizophrenia

A mental disorder characterized by delusions, hallucinations, disorganized speech and behavior, and impaired cognitive function.

Word Salad

A jumbled mixture of words and phrases that lack logical coherence, often seen in severe cases of mental confusion or disorder.

Positive Symptoms

Symptoms of a disorder that are characterized by the presence of unusual behaviors or feelings, such as hallucinations in schizophrenia.