Section 21 Describes a Debate Going on Between Scientists About the the Organization

question 1

Multiple Choice

Section 2.1 describes a debate going on between scientists about the organization of the nervous system. Which of these questions best characterizes this debate?

• A) Is it possible to stain all neurons with the Golgi stain, or just a few?
• B) Are neurons discrete cells, or a single connected web?
• C) In a neuron, does information flow from axon to dendrite or dendrite to axon?
• D) Is light microscopy a better tool for understanding the brain than electrical recordings?

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Definitions:

Brain

The brain is the organ of the central nervous system in humans and other vertebrates, responsible for cognitive functions, sensory processing, emotional responses, and regulation of vital body functions.

Neural Tube

The precursor to the central nervous system in vertebrates, which develops into the brain and spinal cord.

Forebrain

The anterior part of the brain, including the cerebral hemispheres, thalamus, and hypothalamus, responsible for sensory and associative functions.

Hindbrain

The posterior part of the brain comprising structures including the cerebellum and brainstem, responsible for regulating basic functions such as heartbeat and respiration.