Questions: Visual examination of an organ or canal with a specialized lighted instrument is called: (A) fluoroscopy. (B) scan. (C) tomography. (D) endoscopy. (E) pleuroscopy.

The answer is (D): endoscopy.

Explanation for each option:

(A) Fluoroscopy: This is an imaging technique that uses X-rays to obtain real-time moving images of the interior of an object. It is not specifically a visual examination with a lighted instrument.

(B) Scan: This is a general term for various imaging techniques, such as CT scans or MRI scans, which are used to create detailed images of the inside of the body. It does not specifically refer to the use of a lighted instrument for direct visual examination.

(C) Tomography: This refers to imaging by sections or sectioning through the use of any kind of penetrating wave. It is not a direct visual examination with a lighted instrument.

(D) Endoscopy: This is the correct answer. Endoscopy involves the use of a specialized lighted instrument called an endoscope to visually examine the interior of an organ or canal.

(E) Pleuroscopy: This is a type of endoscopy specifically used to examine the pleural space around the lungs. While it involves a lighted instrument, it is a more specific term compared to endoscopy.

In summary, the correct term for the visual examination of an organ or canal with a specialized lighted instrument is endoscopy.