Elrod Is Sitting at Home Trying to Read Maps for His

question 58

Multiple Choice

Elrod is sitting at home trying to read maps for his upcoming vacation. He has difficulty making out the details of the map in the light of the 60-watt ceiling lamp. To improve his ability to see the fine details of the map, he should ________.

• A) hold the map farther away than he normally would, as visual acuity in dim light improves as objects get farther away
• B) look slightly off to the side when reading his maps, as visual acuity in dim light improves when the light falls outside the fovea
• C) blink a lot, because frequent blinking improves visual acuity
• D) turn on a brighter light, because visual acuity tends to improve as the amount of light increases toward daytime levels

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Definitions:

Coarse Rhonchi

Low-pitched, rattling lung sounds that can be heard through a stethoscope, often indicating the presence of thick mucus or blockages in the larger airways.

Fine Crackles

Small, abrupt sounds heard in the lungs during inhalation, indicative of abnormalities such as pulmonary fibrosis or heart failure.

Ventricular Fibrillation

A life-threatening heart rhythm that results in rapid, erratic electrical impulses in the ventricles, leading to ineffective pumping of blood.

Serum Potassium

The concentration of potassium in the serum part of blood, important for nerve function, muscle control, and heart function.