Which tool is used to test reflexes by delivering a quick tap?

Which tool is used to test reflexes by delivering a quick tap?

• A. Ophthalmoscope
• B. Eye occluder
• C. Percussion hammer
• D. Otoscope

Answer: (C)

Testing reflexes relies on delivering a quick, precise tap to a tendon to trigger the reflex arc. The instrument designed for this is the percussion hammer (often called a reflex hammer). Its small rubber head delivers a controlled tap, enough to stretch the tendon and stimulate the muscle spindle, producing a brisk involuntary contraction that you observe as a reflex. The other tools serve different exam purposes: an ophthalmoscope is used to look inside the eye, an eye occluder blocks vision for tests, and an otoscope examines the ear canal and eardrum.

Testing reflexes relies on delivering a quick, precise tap to a tendon to trigger the reflex arc. The instrument designed for this is the percussion hammer (often called a reflex hammer). Its small rubber head delivers a controlled tap, enough to stretch the tendon and stimulate the muscle spindle, producing a brisk involuntary contraction that you observe as a reflex.

The other tools serve different exam purposes: an ophthalmoscope is used to look inside the eye, an eye occluder blocks vision for tests, and an otoscope examines the ear canal and eardrum.