The triclinic shape of copper sulfate can be seen in this cluster of crystals. Copper sulfate crystals are somewhat strange. Some crystals can hold their color for years with no change, while others dehydrate and turn into a white powder. This crystal of copper sulfate is nearly twenty years old.ne of the very best chemicals for growing crystals is copper sulfate. The only trouble with it is that is a poisonous chemical compound. Because of its poisonous nature, it has been used to kill tree roots in sewers. A solution of copper sulfate is simply flushed down the toilet to kill tree roots.
A sensory system is a part of nervous system consisting of sensory receptors that receive stimuli from internal and external environment, neural pathways that conduct this information to brain and parts of brain that processes this information.
Peripheral Nervous System (PNS) The peripheral nervous system consists of nerve cells that lie outside the brain case or spinal vertebrae. Sensory receptors detect changes in the external environment (visual, auditory, olfactory, sensory, etc.) and communicates them to the CNS (via afferent sensory nerves).ntroduction The nervous system is itself divided into two sections: The Peripheral Nervous System (PNS): sensory receptors and motor effectors The Central Nervous System (CNS): Brain and spinal cord In summary, the nervous system is organized as follows: