The correct answer is (b) Endoscope.
An endoscope is a medical instrument used to examine the inside of the body. It is a long, thin tube with a light and camera at one end. The endoscope is inserted into the body through a small incision or natural opening, such as the mouth or anus. The doctor can then use the endoscope to view the inside of the body and take pictures or videos.
Endoscopes are used to diagnose a variety of conditions, including:
- Ulcers
- Cancer
- Diverticulitis
- Crohn’s disease
- Ulcerative colitis
- Inflammatory bowel disease
- Hemorrhoids
- Polyps
Endoscopes can also be used to treat certain conditions, such as:
- Removing polyps
- Stopping bleeding
- Placing stents
- Removing foreign objects
- Instilling medication
Cardiograph (a) is a device that records the electrical activity of the heart. Gyroscope (c) is a device that measures and maintains orientation and angular velocity. Crestograph (d) is a device that measures the electrical activity of the brain.