You Are Conducting an Informal Study in Which,for a Month,you

question 100

Multiple Choice

You are conducting an informal study in which,for a month,you play a particular song for your best friend right before you serve dinner to her.Eventually,you play the song,and then wait to see how your friend responds.She begins to salivate and says she has hunger pains.In this scenario,what is the conditioned stimulus?

• A) the song
• B) the food
• C) the time of day
• D) salivation

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Definitions:

Preload

The degree of stretch of the cardiac muscle fibers at the end of diastole, prior to contraction; it affects the force of contraction and cardiac output.

Stroke Volume

The amount of blood the heart pumps out of a ventricle with each beat.

End-diastolic Volume

The volume of blood in the ventricles at the end of diastole, just before the heart contracts, important for determining cardiac function and performance.

Erythrocytes

Red blood cells, which are responsible for carrying oxygen from the lungs to the body's tissues and returning carbon dioxide from the tissues back to the lungs.