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Where are specialized second order neurons of the sympathetic nervous system that release neurotransmitters into the bloodstream located?
In the adrenal glands
Where does the first order neurons of cell body was located of their axon terminals located?
The first-order neurons in sensory pathways have their cell bodies located in the dorsal root ganglia for somatosensory pathways or in specific sensory ganglia for cranial nerves. The axon terminals of these neurons typically synapse in the spinal cord or brainstem, depending on the sensory modality being transmitted. For instance, in the case of pain and temperature sensations, the axon terminals connect in the dorsal horn of the spinal cord. In contrast, for the visual pathway, the first-order neurons have their cell bodies in the retina and project to the lateral geniculate nucleus in the thalamus.
Where do second-order neurons synapse with third-order neurons?
ventral posterolateral nucleus of the thalamusthalamusin the thalamus
First order sensory neurons?
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.
What is third order neuron?
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.
What is the location for sensory neurons?
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 where?
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.
Where do Ascending sensory neurons terminate?
Ascending sensory neurons primarily terminate in the spinal cord and brainstem, where they synapse with second-order neurons. These second-order neurons then project to various brain regions, including the thalamus, which relays sensory information to the appropriate areas of the cerebral cortex for processing. The precise termination points can vary depending on the specific sensory pathway involved, such as the dorsal column-medial lemniscal pathway or the spinothalamic tract.
What is the medical term meaning chemicals released by neurons that stimulate other neurons muscles or glands?
A neurotransmitter is released by neurons in order to signal other neurons, muscles, or glands.neurotransmittersneurotransmitters
Do Second-order neurons of ascending sensory pathways always decussate.?
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.
What is neurons associated with sensory receptor?
third order neuron
In what order are the neurons activated during a reflex response to a painful stimulus?
During a reflex response to a painful stimulus, the order of neuron activation typically begins with sensory neurons, which detect the pain and transmit signals to the spinal cord. Within the spinal cord, interneurons are activated, which then connect to motor neurons. Finally, the motor neurons send signals to the muscles to initiate a quick withdrawal response from the painful stimulus, bypassing the brain for a faster reaction.
