The Surgical Microscope Is Often Used to Provide Illumination and Magnification

question 13

Multiple Choice

The surgical microscope is often used to provide illumination and magnification for complex procedures to the ear,laryngeal surgery,or reconstructive free flap procedures following neck surgery.A common eyepiece magnification for an otologic microscope is ´12.5,and the usual objective (lens) is ______-mm focal length (f) .A _______-mm lens is used for laryngeal surgery.

• A) 250- or 300; 400
• B) 400; 150
• C) 150; 400
• D) 400; 250 or 300

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Definitions:

Heart Rate

The number of heartbeats per minute, indicating the heart's health and how effectively it pumps blood.

Beats/Minute

A measurement of heart rate indicating the number of heartbeats occurring within one minute.

Accessory Muscles

Muscles not typically used for breathing but that may be recruited when the primary muscles are insufficient, particularly during periods of acute respiratory distress.

Intercostal Muscles

Muscles located between the ribs that play a critical role in the respiratory process by assisting in chest expansion and contraction.