How Big Is the Newborn's Brain

question 28

Multiple Choice

How big is the newborn's brain?

• A) about half a kilogram
• B) about one-third of its adult size
• C) about half of its adult size
• D) about 95% of its adult size

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Definitions:

Neural Impulses

Electrical signals that travel along neurons, transmitting information throughout the nervous system.

Wavelengths

The distances between successive crests of a wave, typically used in the physics of light and sound.

Red

A color at the end of the visible spectrum of light, next to orange and opposite violet, with a dominant wavelength of approximately 620-740 nanometers.

Sensory Adaptation

The process in which sensory receptors grow accustomed to constant, unchanging levels of stimuli over time.