Dmitry holds his hand close to a fire. his neurons allow him to feel the heat, while his motor neurons allow him to move his hand away from the fire.

Sensory neurons

Dmitry holds his hand close to a fire. His sensory neurons allow him to feel the heat, while his motor neurons allow him to move his hand away from the fire.

The Sensory neurons are the nerve cells that receive information from the sensory receptors and transmit the information from the sensory receptors to the brain through the spinal cord. In the question given, Dmitry was able to feel the heat when he held his hand close to the fire because the sensory receptors in the skin transmits information through the sensory neuron from the environment to the central nervous system.  

request for reexamination

hypoxemia refers to a below usual concentration of oxygen in the blood, mainly in the arteries. hypoxemia is an indication of an issue associated with circulation or breathing and may lead to various symptoms like shortness of breath.  

the condition is identified by determining the level of oxygen in the blood sample obtained from an artery. it can also be predicted by determining the oxygen saturation of the blood with the application of a pulse oximeter.  

the normal arterial oxygen is about 75 to 100 mm hg. the values underneath 60 mm hg is generally considered with the requirement for supplemental oxygen. the normal pulse oximeter readings generally range between 95 to 100 percent. the values under 90 percent are regarded as low.  

in the given case, the oxygen saturation is measured at 93 percent, hence, there is no need to administer oxygen, that is, one should withhold oxygen.