Structureof Nervous System
Thenervous system comprises of two parts, which are the peripheralnervous system and CNS. The central nervous system (CNS) comprises ofboth the spinal cord and brain. The bone protects these parts and thecerebrospinal fluid prevents any injury from happening to theseparts. The peripheral nervous system plays the role of connecting theCNS (Central Nervous System) to other parts of the human body. In theCNS, the brain comprises of tissues that appear as a mass, and arealso soft. The spinal cord coordinates the messages sent from thebrain to the body (Brodal 4).
Functionsof the Nervous System and its importance to the human body
Thenervous system comprises of sensory nerves, which collectsinformation from the human body, as well as outside environment andrelays information to the CNS. The information that has been broughtto the CNS is then processes and its meaning interpreted. The nervoussystem also comprises of motor nerves, which are essential inconveying information from the CNS to the muscles (Brodal 6).
Whatcan happen if the human body does not have CNS or if the system isnot working properly?
Absenceof the CNS can have detrimental impacts on the human body. Lack ofthe system or improper functioning can result to cognitivedysfunction, which is manifested by the failure of the human brain tofunction properly through loss of memory. Other disorders that canresult from dysfunctional CNS include poor speech and movementdisorders. Visual problems can also be caused by improper functioningof the Central Nervous System. If the human body lacks a CNS, therecannot be movement of blood in the human body (Brodal 10).
Brodal,Per. TheCentral Nervous System.Oxford: Oxford University Press, USA, 2010. Print.