Why Are Transplants of Dopamine-Producing Cells in Patients with Parkinson

question 78

Multiple Choice

Why are transplants of dopamine-producing cells in patients with Parkinson controversial?

• A)The procedure is expensive, available only to the wealthiest.
• B)The surgery is only available to patients with particular blood types.
• C)There are mixed results on the effectiveness of the treatment.
• D)The tissue is generally taken from aborted human fetuses.

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Definitions:

Intrinsic Motivation

The desire to behave in a certain way because it is enjoyable or satisfying in and of itself.

External Rewards

Incentives provided by an external source, such as money or praise, that motivate individuals to perform certain tasks.

Tension

A mental or physical state resulting from stress or strain, often characterized by feelings of anxiety or discomfort.

Primary Drives

States of tension or arousal that arise from a biological need and are unlearned.