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.
Instructions. Shake down the mercury in your rectal thermometer to below the 98 degrees F mark. Check the thermometer under a bright light to make sure the mercury is down. Lubricate the end of the glass thermometer with petroleum jelly. Ask your child to lie on her left side with knees bent or across your lap.