Understanding Instruments for Internal Body Examination

Different parts of the human body are examined using specific medical instruments designed for that purpose. The question asks about the instrument used to examine the rectum.

Which Instrument is Used to Examine the Rectum?

Let's look at the options provided and understand what each instrument is used for:

• Otoscope: This instrument is used to examine the ear canal and eardrum. It is commonly used by doctors to look inside the ear.
• Ophthalmoscope: This instrument is used to examine the interior of the eye, particularly the retina. It helps doctors view structures at the back of the eye.
• Endoscope: This is a general term for a long, flexible tube with a camera on the end, used to look inside various parts of the body. Depending on the area being examined, different types of endoscopes are used (e.g., gastroscopy for the stomach, colonoscopy for the colon).
• Proctoscope: This is a short, rigid endoscope specifically designed to examine the anal canal and rectum. It allows doctors to visually inspect the lining of the rectum and lower part of the colon.

Based on the uses of these instruments, the proctoscope is the specific instrument designed for examining the rectum.

Conclusion

Therefore, the instrument used to examine the rectum is the proctoscope.