Sexually Active Unmarried Teens Are More Likely to Use Contraceptives

question 403

Multiple Choice

Sexually active unmarried teens are more likely to use contraceptives if they

• A) underestimate their peers' sexual activity.
• B) do not want to appear to be sexually promiscuous.
• C) are in an exclusive sexual relationship involving open communication.
• D) have been extensively exposed to TV shows in which unmarried people are

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Definitions:

Absolute Refractory Period

The period immediately following the firing of a nerve fiber when it cannot be stimulated to fire again, no matter how strong the incoming signal.

Action Potential

A momentary change in electrical potential on the surface of a neuron that occurs when it is stimulated and is capable of transmitting a signal along the neuron.

Millivolts

A unit of electric potential equal to one thousandth of a volt.

Relative Refractory Period

A phase following immediate action where a neuron is less responsive to stimulation and requires a stronger than normal impulse to activate.