How Many Brain Cells to Adult Humans Have on Average

question 3

Multiple Choice

How many brain cells to adult humans have on average?

• A) 1 million
• B) 10 million
• C) 100 billion
• D) 1 trillion
• E) 1 gazillion.

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Definitions:

Moro Reflex

An involuntary reflex found in infants, involving sudden arm flapping and crying when startled.

Startle Reflex

A sudden involuntary reaction to a surprise or unexpected stimulus, often involving physical movements.

Lateralization

The tendency for certain processes or functions to be more dominant in one hemisphere of the brain than in the other.

Hemispheres

The two halves of the brain or the Earth, divided by the equator (for the Earth) or the longitudinal fissure (for the brain), each responsible for different functions.