The Brain and Spinal Cord Are Wrapped in Protective Membranes

question 42

Multiple Choice

The brain and spinal cord are wrapped in protective membranes known as:

• A)The meninges
• B)The corpus callosum
• C)The cerebrospinal membranes
• D)The ventricles
• E)The hippocampus

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Definitions:

Positron-Emission Tomography

A diagnostic imaging test that uses a radiotracer to visualize and measure changes in metabolic processes and in other physiological activities including blood flow, regional chemical composition, and absorption.

Radio Waves

Electromagnetic waves with the longest wavelengths in the electromagnetic spectrum, used in communication systems to transmit data over long distances.

Magnetic Fields

A vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials.

Pineal Gland

A small, pea-shaped gland in the brain that produces melatonin, a hormone that regulates sleep-wake cycles.