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.
Checking the Temperature. If you are using a manual or mercury thermometer, you must shake it down so that the mercury level is at least below 96 degrees F. If you are using a digital thermometer, simply press the button to turn it on. 1  Oral - Place under the tongue; Wait until the digital thermometer beeps or approximately 5 minutes for a manual thermometer; Remember not to take an oral temperature right after eating or drinking something because it will alter the results.