Essays on Sheath

Condoms are a method of contraception used by both males and females. It acts as a barrier. A male condom constitutes a thin sheath that is usually made of latex (Alexander, 2016). On the other hand, the female condom is made of polyurethane sheath that has a flexible ring at the two ends (Edlin & Golanty, 2016). Condoms are intended for protecting people from contracting STIs during sexual intercourse. Besides, they are used as contraceptives. Condoms are grouped as class II medical devices since they exhibit the second lowest level of risk. Various clinical studies have been conducted on various ...

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A wedding dress, or a wedding gown, is an elegant clothing which a bride wears to her wedding ceremony. Usually the wedding dress is white, but the bride can actually choose any colour she would like to. There is also a variety of style solutions to the wedding dress depending on fashion trends, the festivity of the wedding ceremony and the choice of the bride. The style of the fashion dress depends on the cultural traditions of every particular country, but in the Western tradition it is accepted that a white dress with a veil is the most classic ...

1. How does the basic leaf structure suit its function? A leaf is a plant organ that is very crucial for a plant survival. It has a structure that makes it suitable to perform its functions. A leaf normally has a larger surface area so that they are able to absorb sunlight more easily. Sunlight is required by plants for the food making process. A leaf is normally very thin. This allows the carbon dioxide to travel and diffuse in a short distance. Also, oxygen which is usually a by-product, diffuse out easily. A leaf has a green coloring ...

Burj Khalifa is the world’s tallest building and was designed by Skidmore, Owings & Merrill architects, who have been bestowed with the “Global Icon” award. The design of the high-performance building makes use of cutting edge technology and carries cultural and historical influences. The architects faced several challenges when building a tower of this height such as wind, heat, humidity, gravity and earthquake forces. The essay looks at the advanced technical and engineering skills used to create Burj Khalifa and how a skyscrapers’ design should respect cultural values and make the best use of space utilities and add to ...

Eragon is the American adventure-fantasy movie, based on novel by the same name made by Cristopher Paolini. Stefen Fangmeier directed this film. The premiere was on 14th of December 2006. This film was the worst reviewed film on Rotten Tomatoes of 2006. The director of this film tries to send a message to his viewer that even high budget and a well-written source cannot help bad director in film screening. Stefen Fangmeier just smashed the expectations of the books’ audience into the wall, by making this pale and weak film with many inaccuracies and mistakes. The original story, book “ ...

I. Google Search A. http://www.mymsaa.org/about-ms/overview/ This is a website of Multiple Sclerosis Association of America. Multiple sclerosis is an autoimmune disease wherein the myelin sheath sof the nerves are damaged causing symptoms such as numbness, fatigue, mobility problems and more (Mymsaa.org). 5 Facts

A steroid (Cortisone) was first to treat Multiple Sclerosis relapses in the year 1951.

The French neurologist, Jean-Martin Charcot gave MS its name in 1868. The myelin sheath or the protective covering of nerves is damaged in MS. “Lesions” or “plaques” are the inflamed or damaged areas in the brain and spinal cord. Worldwide, about 2.5 million individuals have Multiple Sclerosis. (Mymsaa.org) No specific author was indicated in the page. ...

Definition of Some Terms

- Resting membrane potential: term denoting that Em is about -70mV - Depolarization: reversal of Em due to influx of sodium ions - Sodium (Na+): major extracellular cation - Threshold: minimal stimulus needed to cause an AP - Absolute refractory period: cell membrane insensitive to stimuli. - Potassium (K+): major intracellular cation

Answers to Questions

Describe a synapse, and include definitions of the pre- and post- synaptic neurons. A synapse is an anatomically specialized junction between two neurons, and it is where one neuron alters the activity of another. A presynaptic neuron conducts signals toward a ...

Multiple sclerosis, which is abbreviated MS, is an inflammatory disease that involves the damage of the fatty myelin sheath surrounding brain axons, as well as the spinal cord. The damage results to the demyelination of the axon scarring including a wide range of symptoms. The disease is also referred to as encephalomyelitis disseminate or disseminated sclerosis (Compston and Coles). The first instance of the disease was reported by Jean-Martin Charcot in 1868. The onset of the disease is mainly seen young adults and is mainly common in women. MS has a prevalence of between 2 to 150 people in a population of ...

C3 and C4 photosynthetic pathways

Plants have the ability to grown and survive in a number of different environments. They can adapt from hot and dry to frigid temperatures. In order to adapt to various environmental conditions plants have to adapt and develop mechanisms to survive different conditions. One mechanism of adaptation involves the mode of fixing carbon dioxide. Carbon fixation is the process of incorporating inorganic Carbon to an organic form. Photosynthesis is the process of carbon fixation used by the plants. C3 plants usually are found in cold, temperate climate and are most widely distributed worldwide. They use environmental carbon-dioxide (CO2) and incorporate ...

The nervous system can be divided into two groups: the central nervous system (CNS), which comprises of the brain the spinal cord, and the peripheral nervous system (PNS), which consists of the nerves. Nervous tissue consists of two types of cells: the nerve cells and supporting glial cells (or simply glia). Glia have different types and outnumber nerve cells. In the CNS, astrocytes provide structural support for neurons, regulate the extracellular concentrations of neurotransmitters and ions, and facilitate information transfer at synapses. Radial glia is critical in the development of the nervous system. Both astrocytes and radial glia can ...

Claudia medical history has pointed towards demyelination as a major pathological feature responsible for the listed signs and symptoms said to affect her and made her visit the neurologist. The major initial symptoms noted by Claudia are that of the facial numbness on the chin and lower lip. This later seen to be referred to the upper jaw and then towards the eyes. All these events which occurred over several months and after the usage of certain medication a strong link with a chronic neurological degeneration which was not taking into consideration as earlier as possible in order to address the issue before ...

Abstract

This paper presents a brief overview of Multiple Sclerosis( MS) and discusses about its causes, symptoms, diagnosis and treatment. Multiple Sclerosis affects the brain and spinal cord thereby causing weakness, numbness, stiffness and blurred vision. However, there are many things that need to be explored with regard to this disease. For instance, causes and symptoms of MS are not well-known. Diagnosis is difficult leading to issues in the treatment. Thus, research is going on at different levels so that these hidden aspects can be unearthed. The paper discusses all these factors and concludes that future research is necessary for ...

Discussion and Comparison of Laparoscopic and Open Surgical Inguinal Hernia Repair in Adults.

Abstract There is an ever increasing number of hernia repair surgeries required likely due to decreasing levels of physical activity amongst young adults and concurrent muscle wastage in the abdomen. Time off from work, staffing issues at hospitals, and cost of hospital bed space are some of the issues associated with the high cost of open surgical methods. Wound infection, decreased mobility, and recurrence of the hernia are problems associated with all surgeries. The last thirty years has seen the advent of laparoscopy and minimally invasive techniques of surgical repair. These methods offer the promises of decreased surgical ...

Cartoon 1: “Fire!”

1). The key elements in this political cartoon are the torch bearing hand of the Statue of Liberty, and a fearful looking man, who is labeled “Hysteria,” and is frantically climbing a ladder with a large bucket of water in his hand. The man represents the American people and the hysterical state they were in at the time when Joe McCarthy, the former Republican U.S. Senator, was going about accusing Americans of being communists. The torch literally represents the liberty of Americans. 2). Herblock, Washington Post’s chief editorial cartoonist, is trying to persuade that America’s liberty and freedom was ...

Nervous System

1. Neurons communicate with other neurons and stimulate both glands and muscles. 2. Match the following parts of the neuron and their function:

Dendrites input area, receives signals from other neuron conductive region; generates an action potential Soma (cell body) input area; main nutritional and metabolic area input area; receives signals from other neurons Axon conductive region; generates an action potential input area; main nutritional and metabolic area 3. Signals from other neurons are received at junctions called synapses, located primarily on the dendrites and cell bodies, the receptive and integrative regions of the neuron. ...

1.0 Introduction

Multiple sclerosis (MS) is a neural degenerative condition involving the progressive degeneration of the myelin sheath (the protecting cover to the nerve fibres (axons)) around the nerve cell leading to a break down in transmission of nerve impulses. The impairment of the transmission results in loss of the body’s ability to control and coordinate muscle movement. The disease progresses through a complex and diverse symptoms making it challenging to diagnose, treat and manage. The symptoms of MS may range from gentle to severe weakness, impaired body movement, lack of ordered senses, uncontrolled bowel and bladder, damaged cognition, impaired vision and a variety ...

Introduction

Multiple sclerosis (MS) is a neural degenerative condition involving the progressive degeneration of the myelin sheath (the protecting cover to the nerve fibres (axons)) around the nerve cell leading to a break down in transmission of nerve impulses. The impairment of the transmission results in loss of the body’s ability to control and coordinate muscle movement. The disease progresses through a complex and diverse symptoms making it challenging to diagnose, treat and manage. The symptoms of MS may range from gentle to severe weakness, impaired body movement, lack of ordered senses, uncontrolled bowel and bladder, damaged cognition, impaired vision and a variety ...