It Is Estimated That the Modern Continents Began to Take

question 32

Multiple Choice

It is estimated that the modern continents began to take shape

• A)1)3 million years ago.
• B)650 million years ago.
• C)65 million years ago.
• D)6,000 years ago.

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Definitions:

Cauda Equina

A bundle of spinal nerves and spinal nerve rootlets at the lower end of the spinal cord, resembling a horse's tail.

Reticular Activating System

A network of neurons located in the brainstem that plays a key role in regulating wakefulness and sleep-wake transitions.

Peripheral Nervous System

The peripheral nervous system is the part of the nervous system that consists of the nerves and ganglia outside of the brain and spinal cord, connecting the central nervous system to limbs and organs.

Spinal Cord

A long, thin, tubular structure made up of nervous tissue, which extends from the brainstem down the back and transmits neural signals between the brain and the rest of the body.