Dr Michaels Is Conducting a Study in Which He Wants

question 65

Multiple Choice

Dr. Michaels is conducting a study in which he wants to compare the frequency of alcoholism among identical twins with the frequency of alcoholism among fraternal twins. Dr. Michaels is probably studying _________

• A) neuropsychology.
• B) evolutionary psychology.
• C) behavioral genetics.
• D) the psychology of addiction.

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Definitions:

Conducting System

A network in the heart that electrically controls and coordinates heart muscle contractions.

SA Node

The sinoatrial node, a group of cells in the right atrium of the heart that acts as a natural pacemaker by initiating the heart's electrical impulses.

Purkinje Fibers

Specialized conducting fibers located in the heart's ventricles that help regulate the heart's rhythm.

Heart Skeleton

Fibrous connective tissue that provides a point of attachment for cardiac muscle cells, electrically insulates the atria from the ventricles, and forms the fibrous rings around the valves.