The patellar or knee-jerk reflex is a classic example of
A) the Golgi tendon reflex.
B) the withdrawal reflex.
C) the stretch reflex.
D) the crossed extensor reflex.
E) reciprocal innervation.

Question

Quizplus · Accepted Answer

The patellar or knee-jerk reflex is a classic example of the stretch reflex, which is activated by stretching a muscle. In this case, tapping the patellar tendon produces a stretch in the quadriceps muscle, leading to a reflexive contraction of the muscle and extension of the knee joint. This reflex helps to maintain balance and stability while standing or walking. Choices A, B, D, and E refer to other types of reflexes that are not involved in the patellar reflex.

The Patellar or Knee-Jerk Reflex Is a Classic Example of