Ken Is Having a PET Scan While He Is Doing

question 145

Multiple Choice

Ken is having a PET scan while he is doing a cognitive task.The PET scan shows a great deal of activity in Ken's brain while he is doing the task.What does this mean about Ken's performance on the task?

• A) Ken is likely doing very well on the task; his brain is working hard.
• B) Ken is likely not performing well on the task; his brain is not very efficient.
• C) Ken has likely given up on the task; his brain is shutting down.
• D) Ken has likely completed the task; his brain is consolidating the memory of the task.

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Definitions:

Calibrated Glass Tube

A glass tube that is marked with measurements and is used for accurately measuring volumes of liquid.

Capillary Blood

Blood that is collected from the capillaries, often used for tests requiring small amounts of blood, like glucose level tests.

Buffy Coat

The fraction of an anticoagulated blood sample that contains most of the white blood cells and platelets following density gradient centrifugation.

Centrifuged

The process of subjecting various materials or solutions to the force of a centrifuge to separate components based on density.