Which Statement Most Accurately Describes Embryonic Development of the Nervous

question 61

Multiple Choice

 Which statement most accurately describes embryonic development of the nervous system in humans?

• A) The majority of cells remain as primitive neurons until birth.
• B) All synapses that are formed are permanent.
• C) Neurons form before birth; synapses form after birth.
• D) Far more neurons are produced than will ultimately survive.

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Definitions:

Hemoglobin

A protein in red blood cells that carries oxygen from the lungs to the rest of the body and returns carbon dioxide to be exhaled.

Oxygen

A chemical element (O) that is a highly reactive nonmetal, essential for most forms of life on Earth, and a key component of the atmosphere.

Carbon Dioxide

A colorless, odorless gas produced by burning carbon and organic compounds and by respiration, absorbed by plants in photosynthesis.

Carbonic Acid

A weak acid formed in solution when carbon dioxide reacts with water (H2CO3).