Which of the Following Structures Is Responsible for Refracting Light

question 35

Multiple Choice

Which of the following structures is responsible for refracting light rays?

• A)pupil
• B)lens
• C)iris
• D)cornea

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Definitions:

Cardiac Output

Volume of blood expelled by the ventricles of the heart, equal to the amount of blood ejected at each beat multiplied by the number of beats in the period of time used for computation (usually 1 minute).

Cardiac Dysrhythmias

Abnormal heart rhythms, which can range from harmless to life-threatening conditions.

Oxygenation Requirements

The necessary amount of oxygen needed by the body's tissues, typically increased in conditions affecting the lungs or heart.

Crackles

Sounds heard in the lungs during inhalation that are indicative of fluid in the air spaces, which can be associated with conditions like pneumonia or heart failure.