HYDROCEPHALUS Essay Example | Topics and Well Written Essays - 500 words - 1

HYDROCEPHALUS - Essay Example Hydrocephalus is a pathological state in which the amount of the cerebrospinal fluid rises from the normal amount in the ventricular system (Mitchell et al 2007). Hydrocephalus can result due to many causes which mainly result in altering the normal pathway of the cerebrospinal fluid. The mechanisms include a rise in the formation of the fluid from the choroid plexus or if the re-absorption of the fluid becomes altered. These two reasons are not very common and hydrocephalus is more frequently associated with a blockage in the normal circulation of the cerebrospinal fluid (Govan et al 1995). Hydrocephalus mainly results due to other diseases that affect the human body. The causes may be associated with pathologies of the ventricular system or they may be due to causes outside the ventricular system. Meningitis associated with bacteria, sarcoidosis, trauma to the head and hemorrhages within the subarachnoid space are highlighted as the causes not within the ventricular system that result in the blockage of cerebrospinal fluid. Tumors, colloid cysts, and formation of abscess within the cerebellum, formation of hematomas within the cerebellum or the brain-stem and Arnold Chiari malformation are the intra-ventricular causes that result in hydrocephalus (Davidson et al 2009). Hydrocephalus can affect people from all age groups. It affects infants, people in their old ages as well as adults. Women with increased weight have a risk of developing this condition and these women do not present with any other underlying cause. If a young child is affected with hydrocephalus, the head increases in size. This is owing to the fact that the sutures in the child are open which provides space for the spread of the cerebrospinal fluids. In adults, the sutures are closed and it is because of this that the patient does not present with an increase in head size (Davidson et al 2009; Mitchell et al

Environmental Issues in Canada Essay Example | Topics and Well Written Essays - 1500 words

Environmental Issues in Canada - Essay Example The essay "Environmental Issues in Canada" focuses on the environmental problems that exist in Canada. A comprehensive analysis of some of the most predominant problems in Canada are provided in this paper. For example, the ozone layer is depleting every day because of the poisonous gases released into the atmosphere. Sooner or later the ozone layer is going to split wide open and the human beings and the animals will be affected largely because of this. Skin cancer will become very common in human beings and this will also have other serious repercussions on human beings. The levels of acid rain are unprecedentedly high in Canada and this is because of the pollution. â€Å"On Feb. 2, 2007, the United Nations scientific panel studying climate change declared that the evidence of a warming trend is "unequivocal," and that human activity has "very likely" been the driving force in that change over the last 50 years. The last report by the group, the Intergovernmental Panel on Climate Change, in 2001, had found that humanity had "likely" played a role.† Global Warming, Acid Rain and the depletion of the ozone layer will heavily affect the life of human beings; the depletion of the ozone layer will make human beings more vulnerable to skin cancer. The flora and fauna will inevitably get affected because of all the above concerns. Acid rain is acidic in nature and any rain which consists of unusual amounts of acid can be called as acidic rain. The main cause of acidic rain is the emission of nitrogen and sulfur.