Question

Which action elicits the brachioradialis reflex?

a) Striking the triceps tendon above the elbow
b) Striking the radius 3-5 cm above the wrist
c) Striking the patellar tendon just below the patella
d) Striking the achilles tendon when the client's leg is flexed

Answer 1

The radicalisation reflex is elicited by striking the radius 3-5 cm above the wrist, which is used to assess neural integrity in the arm.

Step-by-step explanation:

The action that elicits the radicalisation reflex is b) Striking the radius 3-5 cm above the wrist. The brachioradialis reflex is one of the common reflexes tested in the arm and is important for assessing the integrity of the spinal cord segments C5 and C6.

The muscle spindle is activated when the radicalisation tendon is struck, which sends a signal through the dorsal root into the spinal cord, synapsing directly on the ventral horn motor neuron. This causes the muscle to contract in order to compensate for a quick stretch, helping to maintain stability.