The Ocean Crust Is Composed Mostly of What

question 3

Multiple Choice

The ocean crust is composed mostly of what?

• A) granite
• B) peridotite
• C) basalt
• D) sial
• E) gneiss

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Definitions:

Duchenne Muscular Dystrophy

A genetic disorder characterized by progressive muscle degeneration and weakness due to alterations of a protein called dystrophin that helps keep muscle cells intact.

Myotome

A group of muscles innervated by the motor fibers of a single spinal nerve root, used to assess and diagnose nerve root damage.

Centrally Acting Muscle Relaxants

Drugs that reduce muscle tension and associated pain by acting on the central nervous system rather than directly on the muscles.

Calcium Blood Test

A diagnostic test measuring the level of calcium in the blood, used to assess bone health and parathyroid function.