Studies of the Infant Brain Show Signs of What Scientists

question 370

Multiple Choice

Studies of the infant brain show signs of what scientists call synaptic pruning. What occurs during this process?

• A) The brain creates additional neural connections by removing parts of the surrounding bone.
• B) Unused synaptic connections and nerve cells are cleared out to make way for new cells.
• C) New cells work to "rewrite" old cells and ultimately change their functioning.
• D) New cells will not develop until the body makes sufficient physical space within the brain.

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Definitions:

Lubrication

The process or technique of using a lubricant to reduce friction and wear between two surfaces in contact.

Sphincter Muscles

Ring-like muscles that constrict or close a bodily passage or orifice to control the passage of substances.

Arterioles

Small blood vessels that branch off from arteries and lead to capillaries, playing a critical role in regulating blood flow and pressure.

Capillary Beds

Networks of capillaries, which are the smallest blood vessels, providing the site for the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and tissues.