SENSORY ORGANS ANATOMY. 1  Sensory organs are very highly developed and specialized organs that are an extension of the central nervous system, with a sole function to take in information and relate it to the brain. The sensory neurons are highly adapted to detect changes of both external and internal changes in the environment and report these changes to the brain.
If you break a mercury thermometer or light bulb, a small amount of liquid mercury may spill out. Liquid mercury can separate into small beads, which can roll some distance away. The mercury may also evaporate into vapour. However, this small amount of mercury is extremely unlikely to cause problems for your health.
Symptoms of poisoning from elemental mercury. This type of poisoning is most likely to occur if there is a spill of mercury from a thermometer or other mercury-containing device. Poisoning is often caused by inhaled mercury vapour, especially in places where there is poor ventilation.