What is the role of motor neurons in a reflex arc?

The motor neuron carries efferent impulses to the effector, which produces the response. Three types of neurons are involved in this reflex arc, but a two-neuron arc, in which the receptor makes contact directly with the motor neuron, also occurs.

How many motor neurons does a somatic reflex arc contain?

one motor neuron
There are two types of reflex arcs:the autonomic reflex arc, affecting inner organs, and the somatic reflex arc, affecting muscles. When a reflex arc consists of only two neurons, one sensory neuron, and one motor neuron, it is defined as monosynaptic.

What are the components of a somatic reflex arc?

The reflex arc consists of 5 components:

• sensory receptor.
• sensory neuron.
• integration center.
• motor neuron.
• effector target.

What are somatic motor reflexes?

Somatic reflexes involve specialized sensory receptors called proprioceptors that monitor the position of our limbs in space, body movement, and the amount of strain on our musculoskeletal system. The effectors involved in these reflexes are located within skeletal muscle.

What are the four components of a Monosynaptic somatic reflex arc?

The simplest example of a spinal reflex is the monosynapic reflex arc, having four components:

• A receptor (in this case, the muscle spindle).
• An afferent component (sensory input).
• A central component (spinal processing).
• An efferent component (motor output).

What are the 5 steps of a reflex arc?

So the reflex arc consists of these five steps in order-sensor, sensory neuron, control center, motor neuron, and muscle. These five parts work as a relay team to take information up from the sensor to the spinal cord or brain and back down to the muscles.

What are the 5 components of the reflex arc?

FIGURE 7-1 A reflex arc contains five fundamental components: 1, a receptor; 2, a sensory neuron; 3, one or more synapses in the CNS; 4, a motor neuron; and 5, a target organ, usually a muscle.

What are examples of somatic reflexes?

Somatic Reflex Examples A touch on the roof of the mouth by the sucking tongue causes swallowing to occur (allowing baby to obtain nourishment). A stroke along the side of the sole of the foot causes the foot to grasp, moving the toes toward the heel. Sharp, sudden pain causes the affected arm or leg to be withdrawn.

What are the 5 components of a reflex arc?

What is the correct order of a reflex arc?

Stimulus, sensory neuron, intermediary neuron, motor neuron and defector organ is the correct order of general reflex arc.