Question: Where do you hit to test your reflexes?
Disambiguated questions and answers: question: Where do you hit to test your ankle jerk reflexes?
Where do you hit to test your bicips reflexes?
Where do you hit to test your brachioradialis reflexes?
Where do you hit to test your knee jerk reflexes?
Where do you hit to test your triceps reflexes?
answer: Achilles tenden
biceps brachii tendon
biceps
brachioradialis tendon
brachioradialis
patellar tendon
just below the patella
triceps tendon
question: Where do you it to test your patellar reflexes?
Where do you hit to test your achilles reflex?
Where do you hit to test your triceps reflex?
answer: just below the patella
On the achilles tendon
tapping the triceps tendon
Natural Questions answer: the tendon in question (from the Wikipedia article "Reflex hammer")