<P> There are two types: autonomic reflex arc (affecting inner organs) and somatic reflex arc (affecting muscles). However, autonomic reflexes sometimes involve the spinal cord and some somatic reflexes are mediated more by the brain than the spinal cord . </P> <P> During a somatic reflex, nerve signals travel along the following pathway: </P> <Ol> <Li> Somatic receptors in the skin, muscles and tendons </Li> <Li> Afferent nerve fibers carry signals from the somatic receptors to the posterior horn of the spinal cord or to the brainstem </Li> <Li> An integrating center, the point at which the neurons that compose the gray matter of the spinal cord or brainstem synapse </Li> <Li> Efferent nerve fibers carry motor nerve signals from the anterior horn to the muscles </Li> <Li> Effector muscle innervated by the efferent nerve fiber carries out the response . </Li> </Ol> <Li> Somatic receptors in the skin, muscles and tendons </Li>

Name and describe the 5 components of a typical somatic reflex arc