Second order neuron cell bodies reside in the dorsal horn of the spinal cord.
In the adrenal glands
ventral posterolateral nucleus of the thalamusthalamusin the thalamus
First order sensory neurons begin in the receptor, travel to dorsal/posterior gray horn of the spinal cord where they synapse with the second order sensory neurons.
A second order neuron is the 2nd neuron to carry an order. The order could be a sensory stimulus or a motor stimulus. For e.g. in order to move a muscle, the order for that muscle to contract starts at the cerebral cortex in the somatomotor area. That is the first order neuron. The axon of the 1st order neuron will synapse with the 2nd order neuron at the level of the brain stem, which commonly decussate (crosses over) to the opposite side. In turn, the axon of the 2nd order neuron will descend along the spinal cord tracts where it will synapse with the 3rd order neuron. The 3rd order neuron is located in the ventral horn of the spinal cord, which will exit with the spinal nerve to supply the muscle.
They can be found in the dorsal root ganglia, retina, peripheral vestibular organs, cochlea, and enteric nervous system. Then there are second order sensory neurons in the brain that form the basis of the 'sensory homonculus'.
Second order neurons of both specific and nonspecific ascending pathways terminate in the thalamus. From there, the thalamus sends projections to the somatosensory cortex for further processing of sensory information.
A neurotransmitter is released by neurons in order to signal other neurons, muscles, or glands.neurotransmittersneurotransmitters
No! Only neurons of the specific (lemniscal) & non-specific (anterolateral) pathways decussate and sensation is therfore interpreted in the opposite cerebral hemisphere.Spinocerebellar ascending pathways transmit proprioceptive sensory stimuli to the same side of the cerebellum.
third order neuron
The Gospel of Mark is located in the New Testament. It is the second Gospel; in order they go Matthew, Mark, Luke and John.
Second order commonly refers to muscles anatomical Origin, Insertion, Innervation, Function.Origin: point where the muscle starts fromInsertion: point of muscle insertion or attachmentInnervation: which nerve(s) innervate or supply nervous impulses to the muscleFunction: the function of the muscle- what the muscle does.
They have to in order for their bodies to survive