The Boundaries of the 88 Constellations Were

question 345

Multiple Choice

The boundaries of the 88 constellations were:

• A) established in antiquity.
• B) established in the 1700s.
• C) established in the 1800s.
• D) not defined until the 1900s.

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Definitions:

Phantom Limb Pain

Perception of pain apparently “in” limbs that have been amputated, often because of activation of nerves in the stump of the missing limb.

Nearsightedness

A common vision condition where close objects appear clearly, but distant ones are blurry, also known as myopia.

Retina

The light-sensitive layer at the back of the eye that contains cells which convert light into electrical signals for the brain to interpret.

Gate Theory

A theory suggesting that the spinal cord contains a neurological "gate" that either blocks pain signals or allows them to continue on to the brain.