Which of the Following Statements Is True

question 39

Multiple Choice

Which of the following statements is true?

• A)People achieve their peak bone mass after the first four decades of their life.
• B)The skeleton no longer adds to bone density after 20 years of age.
• C)The bones begin to lose density after 40 years of age regardless of calcium intake.
• D)People do not need calcium throughout their life.
• E)The bones of an individual actively grow until 30 years of age.

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Definitions:

Myelin Sheaths

Insulating layers around nerves that increase the speed at which electrical impulses are transmitted.

Interneuron

A type of neuron that serves as a connector or intermediary between sensory neurons and motor neurons in the central nervous system.

Central Nervous System

Comprises the brain and spinal cord, responsible for coordinating body activities.

Schwann Cells

Specialized cells that form the myelin sheath around nerve fibers in the peripheral nervous system, aiding in the rapid transmission of electrical signals.