Hypoxia College Essays Samples For Students

Introduction

The body is on an ongoing and continuous quest to maintain an environment characterized with equilibrium. Scientifically, this state is called homeostasis. It is the body’s internal mechanism that is meant to make the person survive, despite the numerous internal and external changes it may encounter. The body of a person who was acutely exposed to a colder than usual environment would, for example, react by preserving the heat that is currently stored in and generated by the body—something which can be done in a lot of ways such as, but may not be limited to vasoconstriction, ...

Abstract

Traumatic brain injury is an acquired injury to the brain that results from an external blunt or penetrating force to the head while; intentional hypoxia is the loss of oxygen supply to the brain which leads to a continuum of injury severity. A review of current literature on this topic suggests that comparisons can be readily drawn between traumatic brain injury and hypoxic brain injury in a rehabilitation setting. Even so, diagnosis of hypoxic brain injury and traumatic brain injury is essential in providing guidance on decisions of treatment. Treating intentional hypoxia, however, involves an establishment of the desired ...

Renal compensatory mechanisms

Severe anemia causes the redistribution of blood supply to vital organs such as the brain and heart. This results in a decrease in renal blood flow causing the activation of the renin-angiotensin-aldosterone-system. Activation of this system results in increased production of aldosterone by the adrenal glands. Aldosterone causes increased retention of salt and water by the kidneys. This compensatory mechanism increases blood volume and renal blood flow without altering tissue hypoxia in other organs (Gaspad, 2005 as cited in Coyer & Lash, 2008).

Pituitary gland

The decrease in renal blood flow also stimulates the production of anti-diuretic hormone which increases ...

Summary

At high altitude human face a unique stress of hypobaric hypoxia due to reduced fall in barometric pressure and the extent of oxygen molecules, therefore, studying humans at high altitude facilitates the understanding of adaptation capabilities of human against evolution as well as environment.
The following essay summarizes an article authored by Beall that studied the arterial-oxygen-content phenotypes of three high-altitude inhabitant populations residing on Tibetan, Andean, and Ethiopian plateaus. The article is based on the problem that how people possess diverse adaptation potential on different heights where the oxygen level is very low in comparison of normal sea ...

Instituion

1. What is the potential impact of supersonic transports (SSTs) on the ozone layer?
An alarming ozone loss has been reported in the past decades, and studies showed that this global problem is attributed largely to human activities. Advancement in technology resulted in the development of high-speed air transport that are economically competitive compared to other forms of aircrafts. There is, however, the associated risk that supersonic transports can impact in the destruction of the ozone layer due to the large amount of atmospheric pollution that it emits. The Massachusetts Institute of Technology carried a study on the possible ...

INTRODUCTION

The research capitalizes on the condition of coastal marine environment due to eutrophication (Gray, Shiu-sun Wu and Or). This process of enrichment that is suppose to foster growth to marine and aquatic life is believed to have an adverse effect due to the disturbance that it creates in the marine system. According to the authors, eutrophication facilitates for excessive nutrient absorption of most aquatic plants and microorganism. As a result, it increases the rate of sedimentation that results to hypoxia. When this happens, fishes and other marine life forms do not receive sufficient oxygen. Malabsorption of oxygen stags growth. This ...

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Growing cells are located within defined environmental niches and any area outside the niche is very hostile. Because normal cells lack survival techniques, it leads to anoikis. The tumor development process strives when malignant cells escape from the local issues and resist anoikis. The cells of the immune system play a dual role of stimulating adaptive immune responses against tumor-specific antigens and at the same time promoting tumor angiogenesis and progression. This is through the support of the innate and inflammatory responses (Ravi et al., 2000).
Integrins are termed as a family of adhesion ...

Developing a Surveillance and Monitoring Program

What action can you take when an outbreak is reported close to home?
Background
SARS (Severe Acute Respiratory Syndrome) is a highly contagious respiratory disease caused by the SARS Coronavirus. Coronaviruses are mostly found in poultry with only a few strains hosted by humans. In the past, Coronaviruses only caused mild flu infections. However, in recent years, the coronaviruses SARS and MERS (Middle East Respiratory Syndrome) have been associated with causal problems for acute respiratory conditions. Further scientific reports have shown that SARS Coronavirus is a new mutant strain origination from animal hosts (Chan & Chan, 2013).

Symptoms

SARS symptoms include ...

Response 1

Upon the loss of blood, the patient’s body will be stimulated through the action of erythropoietin produced by the kidneys to increase erythropoiesis. The result is the increase in the concentration of reticulocytes that will be seen in the peripheral blood smear. The reticulocyte will peak to range between 10 to 15% by the seventh day after the blood loss.

Response 2

The hypoxia is as a result of inadequate delivery of oxygen into the tissues. Hemoglobin is responsible for the transport of oxygen into the tissues. Hypovolemia causes a significant reduction in the level of hemoglobin which results in ...

Introduction

According to Huether (2012), venous insufficiency is a medical condition characterized by the inability of the veins of the lower extremities to effectively push blood back to the inferior vena cava. The venous blood evades its normal antegrade flow path and refluxes down the veins in the lower segments resulting to lower limb venous congestion. Syndromes in this condition are mostly due to valvular incompetence common in the low pressure superficial venous system, although they may also be due to incompetence of the valves in the deep venous systems.

Pathophysiology of CVI

The failure of the valves of superficial veins is attributed to ...

Food security remains one of the challenges facing the world today. Nations across the globe have embraced mechanized agriculture, which encourage use of synthetic fertilizers, reclamation of wetlands, and use of chemicals thus interfering with soil fertility, marine life, ground water, and estuarine environments. Synthetic fertilizers contain high levels of nutrients such as nitrogen, calcium, ammonia, phosphate, phosphorus, and magnesium, which increase crop yields and maturity. However, prolonged use of synthetic fertilizers has detrimental effects on the environment as it alters nitrogen cycle and facilitates accumulation of nitrogen compounds in water, soil, and atmosphere. Large amount of nitrogen in ...

The Chesapeake Bay is the biggest estuary in the country, bordering Virginia and Maryland, and runs around 200 miles inland. However, despite its natural value and unique status as an estuary, it is being plagued by immense levels of pollution. Despite the efforts being put forth by the government and various organizations, the bay is still incredibly polluted, posing a danger to wildlife, marine life, and even people in the surrounding area. In this paper, we will evaluate the causes of this pollution, as well as the condition of the bay and what is being done about it. A customized ...