Question

choose all the components of the patellar reflex. a sensory neuron with stretch receptors in the quadriceps femoris muscle group a motor neuron a sensory neuron with pain receptors in the patella two interneurons in the spinal cord

Explanation:

The patellar reflex is a simple monosynaptic reflex. Stretch - receptors in the quadriceps femoris muscle group detect the stretch and send signals via a sensory neuron. The signal then synapses directly with a motor neuron in the spinal cord to cause muscle contraction. There are no pain - receptors in the patella involved in the patellar reflex, and it is a monosynaptic reflex without interneurons (in the classic patellar reflex pathway).

Answer:

A. A sensory neuron with stretch receptors in the quadriceps femoris muscle group, B. A motor neuron