Essays on Brain Tissue

The cardiovascular system consists of blood, the heart, and the circulatory system, which includes veins, arteries, and capillaries. The function of these organs is to transport oxygen from the lungs to cells throughout the body. Each organ system in the body is essential in providing homeostasis in the human body. However, the actions of the cardiovascular system are critical to human life. Many physicians, scientists, and other professionals dedicate their life to the understanding of the cardiovascular system and its diseases so that people can live longer and more productive lives. This paper will discuss the general anatomy of ...

Abstract

Traumatic brain injury (TBI) is the bruising of the brain due to an impact received on the head. The brain injury can be termed as primary if its caused directly by the impact blow or secondary if its caused by reaction processes such as swelling due to inflammation. Common types TBI include hematomas, contusions, diffuse axonal injury (DAI), concussion, and coup/contrecoup lesions. The type of injuries are characterized by symptoms such as dizziness, headaches, amnesia, loss of consciousness, going into a vegetative state or a coma or death in extreme cases. There is no clearly defined body of knowledge ...

According to the Centers for Disease Control and Prevention (CDC), stroke is the fifth leading illness that causes death in the United States. It is described as one of the primary causes of adult disability (Centers for Disease Control and Prevention). Approximately 800,000 people in the U.S alone suffer from a stroke annually. This figure translates to one American dying after every four minutes (Caplan 19). Owing to the serious prevalence the disease represents, the illness has received requisite attention regarding prevention and treatment techniques in an attempt to reduce its incidence. As a result of its quick ...

Multiple sclerosis is an autoimmune disorder, which affects the central nervous system. It was first described as a separate disease in 1868 by Jean-Martin Charcot (Compston and Coles, 2008). The average prevalence of the disease globally is 30 people from 100000 (Milo and Kahana, 2010). However, the incidence of multiple sclerosis varies greatly depending geography. While in the African countries it happens comparatively rarely, its frequency is increasing consistently in Asia and America. In Europe, multiple sclerosis happens with the highest rate in the world. There are four clinical forms of multiple sclerosis (Compston and Coles, 2008). Relapsing-remitting MS ...

Brain size correlation

Literature Review Research by scientists tends to show that there is disproportionate and sudden growth of brain during a person’s early years and autism. This seems to suggest that rapid excessive growth will likely prevent a child from making the necessary connections that guide one’s normal behavior. This research also indicates that adolescents and children who have Attention Deficit Hyperactivity Disorder (ADHD) have brains that are smaller in percentage when compared to those without ADHD (Haier et al. 2005). Science tends to support the phenomenon that with age, brains shrink. This however may not affect cognitive functions. With ...

Introduction

Schizophrenia is a severe mental illness characterised by the inability to distinguish between what is real and what is not. People suffering from schizophrenia have a distorted insight about the real world and they may hear or see things that other people around them cannot see. Due to the divide between their imaginary world and the real world, the people suffering from schizophrenia have a hard time carrying out daily tasks. As a result, of their limited ability to perform conventional tasks, people suffering from schizophrenia pull out from the society and act out of unease and panic. This leads to problems when ...

Introduction

Most of us have faced moments when we were not able to concentrate on the work on hand. There were times when focusing on a task was a big challenge. However, for most of us this type of syndrome is not very common. However, for some people these types of behaviors are a day-to-day affair. For those people this type of syndrome is uncontrollable and persistent. If a person shows such signs then they may be a victim of attention deficit hypersensitivity syndrome. Attention Deficit Hypersensitivity Syndrome (ADHD) does not show any physical signs or cannot be detected using laboratory tests. The symptoms of ...

Introduction

In the mouse and other mammalian species, the pool of primordial follicles becomes established during fetal or neonatal life (Oktay et al., 1995). Over the mammal’s lifespan, the follicles undergo growth and development, and eventually the initial reserve of follicles begins to diminish during the mammal’s midlife. Briefly, follicular cells move from a primordial phase, in which little DNA synthesis is taking place, to enter a primary and then secondary stage, in which the granulose cells undergo intense proliferation and high levels of DNA synthesis can be observed. Antral and post- ovulation stages follow (Oktay et al., 1995). Folliculogenesis ...

Hemorrhagic Stroke

Introduction The National Stroke Association (2009) defines stroke as an ‘attack’ to the brain cells and tissues that often cuts off perfusion. Hemorrhagic strokes results when a blood vessel that supplies a certain area of the brain breaks or ruptures causing blood leakage into the brain tissue (Magistris, Bazak, and Martin, 2013). Prevalence of stroke in the United States (US) is estimated at 800,000 per year and mortality rate is about 160,000 people per year (National Stroke Association, 2009). In Canada, stroke accounts for more than 14,000 deaths per year (Magistris, Bazak, and Martin, 2013). However, ...

Alzheimer’s disease

Alzheimer’s disease is the most common type of dementia. Dementia is a term used to describe a variety of conditions and diseases that occur when the nerve cells in the brain degenerate or function abnormally. The degeneration of neurons results into changes in memory, behavior and cognitive functions. Alzheimer’s disease causes changes that eventually impair the ability of an individual to carry out bodily functions like walking and swallowing. The disease may ultimately lead to death. Early symptoms of the disease include gradual drop in the ability to recall new information. This is due to the disruptions of brain ...

Introduction

Blunt force trauma incidences occur where the person’s head or body has impact with a dull, firm surface of a dull object. There are several kinds of blunt trauma that lead to death. These are traumas to the chest, abdomen and the head. Causes of death in blunt force trauma are internal excessive bleeding either in the head, chest or the abdomen. Most of the blunt force trauma is caused by motor vehicle accidents. Other major causes are accidents at the workplace and falls from buildings. There are certain cases of internal bleeding caused by blunt force trauma that ends ...