Which of the Following General Principles Can Be Gleaned from Developmental

question 29

Multiple Choice

Which of the following general principles can be gleaned from developmental studies of the visual system in vertebrates?

• A) Connection specificity that distinguishes discrete cell types is more likely to be determined by molecular cues.
• B) Connection specificity that chooses between similar cells tends to involve neuronal activity and competition.
• C) Initial targeting by neuronal processes tends to be activity-independent.
• D) Refinement of neuronal processes tends to be activity-dependent.
• E) All of the above

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Definitions:

Neurogenesis

The process by which new neurons are formed in the brain, contributing to brain plasticity and repair.

Neural Pathways

Networks of neurons in the brain that work together to enable a specific function, such as thought, speech, or motor coordination.

Dentate Gyrus

A key region of the hippocampus involved in memory formation and spatial navigation.

Repression

A defense mechanism where unpleasant thoughts, feelings, or desires are excluded from consciousness.