The Nervous System Introduction The nervous system is the system in the body given the responsibility of sending information from all corners of the body. The system comprises of the brain, a network of neutrons and the brain. This system works to coordinate functions of internal organs as well as to facilitate response to any form of change observed on external environment…
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Sensory nervous system for instance sends viable information across to the CNS. The kind of information send through this channel is mostly gotten from external stimuli or from internal organs. From the CNS, the cells from the motor nervous system will carry loads of relevant information to organs, glands and muscles (Rudolf, 2008). Some elements of the nervous system perform such vital functions as contracting the bladder, constricting pupils as well as inhibiting heart rates. These are done by the parasympathetic division of the nervous system. On the same breath, the sympathetic division reverses these by speeding up the heart rate, relaxing the bladder and even dilating the pupils. This is in form of corrective measure to avert potential danger that accelerated heart rate can come with. It is said that each and every emotion that one experiences has to pass through the central nervous system. The CNS plays a pivotal role to initiate certain systems of reactions as soon as it is triggered. As soon as the CNS starts to facilitate these systems, thoughts, experiences and movements, it does so to reach the rest of the body through organs, neurons and cells. A sense of balance is also vital to the body. This means that the body may want to stick to a strict mode of operation. The CNS manages to assist the body do this so as to enable one survive. Response to situations that are considered stressful are also controlled as much as possible, mostly through the launch of adrenaline that makes the stress patterns have little or no effect on the rest of the body. The CNS also manages to regulate serotonim production which has adverse effects on daily functions of life like desire for sex, hunger and sleep (Valery, 2006). The human body has immune system that contains various organs. These organs have billions of cells that function towards facilitating immunity. The endocrine system always releases hormones that support CNS so as to enable people or animals survive. The white blood cells are the major stars in this effort as they check for foreign invaders in circulation of the blood. They facilitate immune response and fight against any unwanted materials that may invade the blood or the tissues. Living with stress tends to threaten the stability of an individual or an animal, and therefore homeostasis tends to restore the balance by responses that are either behavioral or physiological to attack intruders. The severity by which the intruders attack will act to activate the CNS which will in turn appoint the relevant adaptive responses. In this way the body stays quite safe and has the ability to fight diseases (Valery, 2006). Doctors have pointed out in studies that inflammations are the major causes of degenerative and chronic diseases like allergies, arthritis, cancer, diabetes chronic fatigue, heart disease, lupus as well as many other diseases. This form of inflammation causes strong response witnessed from immune systems against pathogens that cause illness and physical injury. All these diseases have adverse effects on the immune system especially if they occur alongside stress. The immune system will be overcrowded and hence weakened leading to a compromise state of affairs in the immune system and hence this exposes people to many other illnesses (Rudolf, 2008). Hormones release is majorly done to facilitate
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In human beings, the nervous system is consisted of the brain, the spinal cord and the retina (63).1 The peripheral nervous system in human beings is constituted by ganglia and nerves that join each ganglion to the central nervous system and sensory neurons (63).2 Complex neural pathways interconnect these regions.
353). The cuticle is 5µm thick in young larvae (36 hours, first instar), 25µm in 60-hour-old larvae (second instar), and 40µm in last (third) instar larvae. Maggot behavior is linked to instar development; for example, in the first and second instar the maggots stay close together and feed, but in the third instar, they move away from each other and seek a safe placement for pupal development to occur.
The author claims that Indonesian people are yet to come out of the trauma they experienced during the Tsunami when the Shariah laws are being implemented in a manner which reminds us of the Stone Age. On the one hand we are talking about equality in the society, but on the other hand we have the example of women being prosecuted.
As the author of the essay puts it, the Central Nervous System form the major portion of the nervous system and includes both the brain as well as the spinal cord. Furthermore, some classifications of the Central Nervous System also include retina and the cranial nerves as part of the Central Nervous System.
The process of credit management is also core to a company’s financial health, as this impacts on the company’s cash flow in a major way. Poor credit management and cash flow in a company might limit the profitability of the company and result in severe
The autonomic nervous system comprises two antagonistic sets of nerves, the sympathetic and parasympathetic nervous systems. The sympathetic nervous system connects the internal organs to the brain by spinal nerves. When stimulated, these
Nerve Processes are the projection in the shape of a finger emanating from the cell body and they transmit signals. They are identified into to types, axons that carry signals away from the cell body and dendrites that take the signals toward the cell body. The nervous system has many-fold functions and remains in command of the entire activities of body and mind.
Liver gets the blood via two large vessels called the hepatic artery and the portal vein. While the heptic artery carries oxygen-enriched blood from the aorta the portal vein carries blood containing digested food from the small intestine. Further these blood vessels divide several times to finally end up in small capillaries.